MESON Chess Problem Database
Problem Display
PID: 3032 (4n3/2N1P1p1/1p2npP1/bP1R1N1Q/2kp1pP1/B1p2p2/2B2K2/1R6 w - - 0 1)
Gevers, Raymond
Good Companions (December), 1917
#2
12 + 11
| 2681 | All Change Here! | 1919 |
SOLUTION
- SOUND
- Sets
- 1...Bb4
- 2.Rxb4#
- 1...Sc5
- 2.Rxd4#
- 1...Sg5
- 2.Rxd4#
- 1...S6xc7
- 2.Rxd4#
- 1...Sd8
- 2.Rxd4#
- 1...Sf8
- 2.Rxd4#
- 1...Sd6
- 2.Sxd6#
- 1...S8xc7
- 2.Sd6#
- 1...d3
- 2.Bb3#
- 2.Bxd3#
- 1...Bb4
- Tries
- 1.Ke1?
- 1...S6xc7
- 2.Rxd4#
- 1...S8xc7
- 2.Sd6#
- 1...Bb4
- 2.Rxb4#
- 1...Sc5
- 2.Rxd4#
- 1...Sg5
- 2.Rxd4#
- 1...Sd8
- 2.Rxd4#
- 1...Sf8
- 2.Rxd4#
- 1...Sd6
- 2.Sxd6#
- 1...d3
- 2.Bb3#
- 2.Bxd3#
- 1...f2+!
- 1...S6xc7
- 1.Kf1?
- 1...S6xc7
- 2.Rxd4#
- 1...S8xc7
- 2.Sd6#
- 1...Bb4
- 2.Rxb4#
- 1...Sc5
- 2.Rxd4#
- 1...Sg5
- 2.Rxd4#
- 1...Sd8
- 2.Rxd4#
- 1...Sf8
- 2.Rxd4#
- 1...Sd6
- 2.Sxd6#
- 1...d3
- 2.Bb3#
- 2.Bxd3#
- 1...f2!
- 1...S6xc7
- 1.Kg1?
- 1...S6xc7
- 2.Rxd4#
- 1...S8xc7
- 2.Sd6#
- 1...Bb4
- 2.Rxb4#
- 1...Sc5
- 2.Rxd4#
- 1...Sg5
- 2.Rxd4#
- 1...Sd8
- 2.Rxd4#
- 1...Sf8
- 2.Rxd4#
- 1...Sd6
- 2.Sxd6#
- 1...d3
- 2.Bb3#
- 2.Bxd3#
- 1...f2+!
- 1...S6xc7
- 1.Kxf3?
- 1...S6xc7
- 2.Rxd4#
- 1...S8xc7
- 2.Sd6#
- 1...Bb4
- 2.Rxb4#
- 1...Sc5
- 2.Rxd4#
- 1...Sd8
- 2.Rxd4#
- 1...Sf8
- 2.Rxd4#
- 1...Sd6
- 2.Sxd6#
- 1...d3
- 2.Bb3#
- 2.Bxd3#
- 1...Sg5+!
- 1...S6xc7
- 1.Sa6?
- 1...Kxd5
- 2.Se3#
- 1...Sc5
- 2.Rxd4#
- 1...Sg5
- 2.Rxd4#
- 1...S6c7
- 2.Rxd4#
- 1...Sd8
- 2.Rxd4#
- 1...Sf8
- 2.Rxd4#
- 1...Sd6
- 2.Sxd6#
- 1...S8c7
- 2.Sd6#
- 1...d3
- 2.Bb3#
- 1...Bb4!
- 1...Kxd5
- 1.Sxe8?
- threat
- 2.Sfd6#
- 1...Kxd5
- 2.Se3#
- 1...Sg5
- 2.Rxd4#
- 1...Bb4!
- threat
- 1.Be4?
- 1...S6xc7
- 2.Rxd4#
- 1...S8xc7
- 2.Sd6#
- 1...Bb4
- 2.Rxb4#
- 1...Sc5
- 2.Rxd4#
- 1...Sg5
- 2.Rxd4#
- 1...Sd8
- 2.Rxd4#
- 1...Sf8
- 2.Rxd4#
- 1...Sd6
- 2.Sxd6#
- 1...d3
- 2.Bxd3#
- 1...c2!
- 1...S6xc7
- 1.Bd6?
- 1...S6xc7
- 2.Rxd4#
- 1...Sxd6
- 2.Sxd6#
- 1...Bb4
- 2.Rxb4#
- 1...Sc5
- 2.Rxd4#
- 1...Sg5
- 2.Rxd4#
- 1...Sd8
- 2.Rxd4#
- 1...Sf8
- 2.Rxd4#
- 1...d3
- 2.Bb3#
- 2.Bxd3#
- 1...S8xc7!
- 1...S6xc7
- 1.Rb2?
- 1...S6xc7
- 2.Rxd4#
- 1...S8xc7
- 2.Sd6#
- 1...Bb4
- 2.Rxb4#
- 1...Sc5
- 2.Rxd4#
- 1...Sg5
- 2.Rxd4#
- 1...Sd8
- 2.Rxd4#
- 1...Sf8
- 2.Rxd4#
- 1...Sd6
- 2.Sxd6#
- 1...d3
- 2.Bb3#
- 2.Bxd3#
- 1...cxb2!
- 1...S6xc7
- 1.Rb3?
- 1...S6xc7
- 2.Rxd4#
- 1...S8xc7
- 2.Sd6#
- 1...Bb4
- 2.Rxb4#
- 1...Sc5
- 2.Rxd4#
- 1...Sg5
- 2.Rxd4#
- 1...Sd8
- 2.Rxd4#
- 1...Sf8
- 2.Rxd4#
- 1...Sd6
- 2.Sxd6#
- 1...d3!
- 1...S6xc7
- 1.Rd7?
- 1...S6xc7
- 2.Rxd4#
- 1...S8xc7
- 2.Sd6#
- 1...Sc5
- 2.Rxd4#
- 1...Sg5
- 2.Rxd4#
- 1...Sd8
- 2.Rxd4#
- 1...Sf8
- 2.Rxd4#
- 1...Sd6
- 2.Sxd6#
- 1...d3
- 2.Bb3#
- 2.Bxd3#
- 1...Bb4!
- 1...S6xc7
- 1.Qh1?
- 1...S6xc7
- 2.Rxd4#
- 1...Bb4
- 2.Rxb4#
- 1...Sc5
- 2.Rxd4#
- 1...Sg5
- 2.Rxd4#
- 1...Sd8
- 2.Rxd4#
- 1...Sf8
- 2.Rxd4#
- 1...Sd6
- 2.Sxd6#
- 1...d3
- 2.Bb3#
- 2.Bxd3#
- 1...S8xc7!
- 1...S6xc7
- 1.Qh2?
- 1...S6xc7
- 2.Rxd4#
- 1...Bb4
- 2.Rxb4#
- 1...Sc5
- 2.Rxd4#
- 1...Sg5
- 2.Rxd4#
- 1...Sd8
- 2.Rxd4#
- 1...Sf8
- 2.Rxd4#
- 1...Sd6
- 2.Sxd6#
- 1...d3
- 2.Bb3#
- 2.Bxd3#
- 1...S8xc7!
- 1...S6xc7
- 1.Qh3?
- 1...S6xc7
- 2.Rxd4#
- 1...Bb4
- 2.Rxb4#
- 1...Sc5
- 2.Rxd4#
- 1...Sg5
- 2.Rxd4#
- 1...Sd8
- 2.Rxd4#
- 1...Sf8
- 2.Rxd4#
- 1...Sd6
- 2.Sxd6#
- 1...d3
- 2.Bb3#
- 2.Bxd3#
- 1...S8xc7!
- 1...S6xc7
- 1.Qh4?
- 1...S6xc7
- 2.Rxd4#
- 1...Bb4
- 2.Rxb4#
- 1...Sc5
- 2.Rxd4#
- 1...Sg5
- 2.Rxd4#
- 1...Sd8
- 2.Rxd4#
- 1...Sf8
- 2.Rxd4#
- 1...Sd6
- 2.Sxd6#
- 1...d3
- 2.Bb3#
- 2.Bxd3#
- 1...S8xc7!
- 1...S6xc7
- 1.Qg5?
- 1...Sxg5
- 2.Rxd4#
- 1...S6xc7
- 2.Rxd4#
- 1...S8xc7
- 2.Sd6#
- 1...Bb4
- 2.Rxb4#
- 1...Sc5
- 2.Rxd4#
- 1...Sd8
- 2.Rxd4#
- 1...Sf8
- 2.Rxd4#
- 1...Sd6
- 2.Sxd6#
- 1...d3
- 2.Bb3#
- 2.Bxd3#
- 1...fxg5!
- 1...Sxg5
- 1.Qh7?
- 1...S6xc7
- 2.Rxd4#
- 1...Bb4
- 2.Rxb4#
- 1...Sc5
- 2.Rxd4#
- 1...Sg5
- 2.Rxd4#
- 1...Sd8
- 2.Rxd4#
- 1...Sf8
- 2.Rxd4#
- 1...Sd6
- 2.Sxd6#
- 1...d3
- 2.Bb3#
- 2.Bxd3#
- 1...S8xc7!
- 1...S6xc7
- 1.Qh8?
- 1...S6xc7
- 2.Rxd4#
- 1...Bb4
- 2.Rxb4#
- 1...Sc5
- 2.Rxd4#
- 1...Sg5
- 2.Rxd4#
- 1...Sd8
- 2.Rxd4#
- 1...Sf8
- 2.Rxd4#
- 1...Sd6
- 2.Sxd6#
- 1...d3
- 2.Bb3#
- 2.Bxd3#
- 1...S8xc7!
- 1...S6xc7
- 1.Ke1?
- Keys
- 1.Sa8!
- 1...Kxd5
- 2.Se3#
- 1...Bb4
- 2.Sxb6#
- 1...Sc5
- 2.Rxd4#
- 1...Sg5
- 2.Rxd4#
- 1...S6c7
- 2.Rxd4#
- 1...Sd8
- 2.Rxd4#
- 1...Sf8
- 2.Rxd4#
- 1...Sd6
- 2.Sxd6#
- 1...S8c7
- 2.Sd6#
- 1...d3
- 2.Bb3#
- 1...Kxd5
- 1.Sa8!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 1
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- B(f);N_GUARD::R1(A),XB(f)
- S(h);N_GUARD::R1(G),XP(d)
- S(h);N_GUARD,XS(K)::R1(G),XP(d)
- S(k);N_GUARD::S(H),XS(k)
- S(k);N_GUARD,XS(K)::S(H)
- Tries
- Try
- K(C);S_FLIGHT
- Vars
- S(h);N_GUARD,XS(K)::R1(G),XP(d)
- S(k);N_GUARD,XS(K)::S(H)
- B(f);N_GUARD::R1(A),XB(f)
- S(h);N_GUARD::R1(G),XP(d)
- S(k);N_GUARD::S(H),XS(k)
- Refutation
- P(b);CHECK
- Try
- K(C);P-FLIGHT
- Vars
- S(h);N_GUARD,XS(K)::R1(G),XP(d)
- S(k);N_GUARD,XS(K)::S(H)
- B(f);N_GUARD::R1(A),XB(f)
- S(h);N_GUARD::R1(G),XP(d)
- S(k);N_GUARD::S(H),XS(k)
- Refutation
- P(b);
- Try
- K(C);S_FLIGHT
- Vars
- S(h);N_GUARD,XS(K)::R1(G),XP(d)
- S(k);N_GUARD,XS(K)::S(H)
- B(f);N_GUARD::R1(A),XB(f)
- S(h);N_GUARD::R1(G),XP(d)
- S(k);N_GUARD::S(H),XS(k)
- Refutation
- P(b);CHECK
- Try
- K(C);P-FLIGHT,XP(b)
- Vars
- S(h);N_GUARD,XS(K)::R1(G),XP(d)
- S(k);N_GUARD,XS(K)::S(H)
- B(f);N_GUARD::R1(A),XB(f)
- S(h);N_GUARD::R1(G),XP(d)
- S(k);N_GUARD::S(H),XS(k)
- Refutation
- S(h);CHECK
- Try
- S(K);
- Vars
- K(c);S_FLIGHT,XR(G)::QAR(I)+S(H),DCHECK
- S(h);N_GUARD::R1(G),XP(d)
- S(k);N_GUARD::S(H),XS(k)
- S(k);N_GUARD::S(H)
- P(d);::B(B)
- Refutation
- B(f);
- Try
- S(K);XS(k)
- Threat
- S(H)
- Vars
- K(c);S_FLIGHT,XR(G)::QAR(I)+S(H),DCHECK
- S(h);N_GUARD::R1(G),XP(d)
- Refutation
- B(f);
- Try
- B(B);
- Vars
- S(h);N_GUARD,XS(K)::R1(G),XP(d)
- S(k);N_GUARD,XS(K)::S(H)
- B(f);N_GUARD::R1(A),XB(f)
- S(h);N_GUARD::R1(G),XP(d)
- S(k);N_GUARD::S(H),XS(k)
- P(d);::B(B),XP(d)
- Refutation
- P(a);
- Try
- B(D);
- Vars
- S(h);N_GUARD,XS(K)::R1(G),XP(d)
- S(k);XB(D)::S(H),XS(k)
- B(f);N_GUARD::R1(A),XB(f)
- S(h);N_GUARD::R1(G),XP(d)
- Refutation
- S(k);XS(K)
- Try
- R(A);
- Vars
- S(h);N_GUARD,XS(K)::R1(G),XP(d)
- S(k);N_GUARD,XS(K)::S(H)
- B(f);N_GUARD::R1(A),XB(f)
- S(h);N_GUARD::R1(G),XP(d)
- S(k);N_GUARD::S(H),XS(k)
- Refutation
- P(a);XR(A)
- Try
- R(A);
- Vars
- S(h);N_GUARD,XS(K)::R1(G),XP(d)
- S(k);N_GUARD,XS(K)::S(H)
- B(f);N_GUARD::R1(A),XB(f)
- S(h);N_GUARD::R1(G),XP(d)
- S(k);N_GUARD::S(H),XS(k)
- Refutation
- P(d);
- Try
- R(G);
- Vars
- S(h);N_GUARD,XS(K)::R1(G),XP(d)
- S(k);N_GUARD,XS(K)::S(H)
- S(h);N_GUARD::R1(G),XP(d)
- S(k);N_GUARD::S(H),XS(k)
- Refutation
- B(f);
- Try
- Q(I);
- Vars
- S(h);N_GUARD,XS(K)::R1(G),XP(d)
- B(f);N_GUARD::R1(A),XB(f)
- S(h);N_GUARD::R1(G),XP(d)
- S(k);N_GUARD::S(H),XS(k)
- Refutation
- S(k);XS(K)
- Try
- Q(I);
- Vars
- S(h);N_GUARD,XS(K)::R1(G),XP(d)
- B(f);N_GUARD::R1(A),XB(f)
- S(h);N_GUARD::R1(G),XP(d)
- S(k);N_GUARD::S(H),XS(k)
- Refutation
- S(k);XS(K)
- Try
- Q(I);
- Vars
- S(h);N_GUARD,XS(K)::R1(G),XP(d)
- B(f);N_GUARD::R1(A),XB(f)
- S(h);N_GUARD::R1(G),XP(d)
- S(k);N_GUARD::S(H),XS(k)
- Refutation
- S(k);XS(K)
- Try
- Q(I);
- Vars
- S(h);N_GUARD,XS(K)::R1(G),XP(d)
- B(f);N_GUARD::R1(A),XB(f)
- S(h);N_GUARD::R1(G),XP(d)
- S(k);N_GUARD::S(H),XS(k)
- Refutation
- S(k);XS(K)
- Try
- Q(I);
- Vars
- S(h);N_GUARD,XQ(I)::R1(G),XP(d)
- S(h);N_GUARD,XS(K)::R1(G),XP(d)
- S(k);N_GUARD,XS(K)::S(H)
- B(f);N_GUARD::R1(A),XB(f)
- S(h);N_GUARD::R1(G),XP(d)
- S(k);N_GUARD::S(H),XS(k)
- Refutation
- P(i);XQ(I)
- Try
- Q(I);
- Vars
- S(h);N_GUARD,XS(K)::R1(G),XP(d)
- B(f);N_GUARD::R1(A),XB(f)
- S(h);N_GUARD::R1(G),XP(d)
- S(k);N_GUARD::S(H),XS(k)
- Refutation
- S(k);XS(K)
- Try
- Q(I);
- Vars
- S(h);N_GUARD,XS(K)::R1(G),XP(d)
- B(f);N_GUARD::R1(A),XB(f)
- S(h);N_GUARD::R1(G),XP(d)
- S(k);N_GUARD::S(H),XS(k)
- Refutation
- S(k);XS(K)
- Try
- Actual
- S(K);
- Vars
- K(c);S_FLIGHT,XR(G)::QAR(I)+S(H),DCHECK
- B(f);N_GUARD::S(K),XP(g)
- S(h);N_GUARD::R1(G),XP(d)
- S(k);N_GUARD::S(H),XS(k)
- S(k);N_GUARD::S(H)
- P(d);::B(B)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
CSS/Javascript (jQuery, Bootstrap & DataTables).