MESON Chess Problem Database
Problem Display
PID: 3033 (1Q4b1/B3n3/3bp3/R2pk1nN/3ppR1N/8/Kp6/1B6 w - - 0 1)
Gevers, Raymond
Source?, 1917
#2
8 + 10
| 2681 | All Change Here! | 1919 |
SOLUTION
- SOUND
- Sets
- 1...Bc7
- 2.Qxc7#
- 1...Bxb8
- 2.Bxb8#
- 1...Bf7
- 2.Qh8#
- 1...Bh7
- 2.Qh8#
- 1...Sf3
- 2.Rxe4#
- 1...Sh3
- 2.Rxe4#
- 1...Sf7
- 2.Rxe4#
- 1...Sh7
- 2.Rxe4#
- 1...Sf5
- 2.Sg6#
- 1...Sc6
- 2.Sg6#
- 1...Sg6
- 2.Sxg6#
- 1...Sc8
- 2.Sg6#
- 1...d3
- 2.Qxb2#
- 1...e3
- 2.Bxd4#
- 1...Bc7
- Tries
- 1.Kxb2?
- 1...Bxb8
- 2.Bxb8#
- 1...Bc7
- 2.Qxc7#
- 1...Bf7
- 2.Qh8#
- 1...Bh7
- 2.Qh8#
- 1...Sf3
- 2.Rxe4#
- 1...Sh3
- 2.Rxe4#
- 1...Sf7
- 2.Rxe4#
- 1...Sh7
- 2.Rxe4#
- 1...Sf5
- 2.Sg6#
- 1...Sc6
- 2.Sg6#
- 1...Sg6
- 2.Sxg6#
- 1...Sc8
- 2.Sg6#
- 1...e3
- 2.Bxd4#
- 1...d3!
- 1...Bxb8
- 1.Kb3?
- 1...Bxb8
- 2.Bxb8#
- 1...Bc7
- 2.Qxc7#
- 1...Bf7
- 2.Qh8#
- 1...Bh7
- 2.Qh8#
- 1...Sf3
- 2.Rxe4#
- 1...Sh3
- 2.Rxe4#
- 1...Sf7
- 2.Rxe4#
- 1...Sh7
- 2.Rxe4#
- 1...Sf5
- 2.Sg6#
- 1...Sc6
- 2.Sg6#
- 1...Sg6
- 2.Sxg6#
- 1...Sc8
- 2.Sg6#
- 1...e3
- 2.Bxd4#
- 1...d3!
- 1...Bxb8
- 1.Sf3+?
- 1...exf3
- 2.Bxd4#
- 1...Sxf3!
- 1...exf3
- 1.Rf5+?
- 1...Sxf5
- 2.Sg6#
- 1...exf5!
- 1...Sxf5
- 1.Ra4?
- threat
- 2.Bxd4#
- 1...Bxb8
- 2.Bxb8#
- 1...Bc7
- 2.Qxc7#
- 1...Sf5
- 2.Sg6#
- 1...Sc6
- 2.Sg6#
- 1...d3
- 2.Bd4#
- 1...Sf3!
- threat
- 1.Rb5?
- 1...Bxb8
- 2.Bxb8#
- 1...Bc7
- 2.Qxc7#
- 1...Sf3
- 2.Rxe4#
- 1...Bf7
- 2.Qh8#
- 1...Bh7
- 2.Qh8#
- 1...Sh3
- 2.Rxe4#
- 1...Sf7
- 2.Rxe4#
- 1...Sh7
- 2.Rxe4#
- 1...Sf5
- 2.Sg6#
- 1...Sc6
- 2.Sg6#
- 1...Sg6
- 2.Sxg6#
- 1...Sc8
- 2.Sg6#
- 1...e3
- 2.Bxd4#
- 1...d3!
- 1...Bxb8
- 1.Rc5?
- 1...Bxb8
- 2.Bxb8#
- 1...Bc7
- 2.Qxc7#
- 1...d3
- 2.Qxb2#
- 1...Sf3
- 2.Rxe4#
- 1...Bf7
- 2.Qh8#
- 1...Bh7
- 2.Qh8#
- 1...Sh3
- 2.Rxe4#
- 1...Sf7
- 2.Rxe4#
- 1...Sh7
- 2.Rxe4#
- 1...Sf5
- 2.Sg6#
- 1...Sc6
- 2.Sg6#
- 1...Sg6
- 2.Sxg6#
- 1...Sc8
- 2.Sg6#
- 1...e3!
- 1...Bxb8
- 1.Ra6?
- threat
- 2.Qxd6#
- 1...Bxb8
- 2.Bxb8#
- 1...Bc7
- 2.Qxc7#
- 1...Sf5
- 2.Sg6#
- 1...Sc6
- 2.Sg6#
- 1...Sc8
- 2.Sg6#
- 1...Sf7!
- threat
- 1.Kxb2?
- Keys
- 1.Rg4!
- 1...Bxb8
- 2.Bxb8#
- 1...Bc7
- 2.Qxc7#
- 1...d3
- 2.Qxb2#
- 1...Bf7
- 2.Qh8#
- 1...Bh7
- 2.Qh8#
- 1...Sf3
- 2.Rxe4#
- 1...Sh3
- 2.Rxe4#
- 1...Sf7
- 2.Rxe4#
- 1...Sh7
- 2.Rxe4#
- 1...Sf5
- 2.Sg6#
- 1...Sc6
- 2.Rxg5#
- 1...Sg6
- 2.Rxg5#
- 1...Sc8
- 2.Rxg5#
- 1...e3
- 2.Bxd4#
- 1...Bxb8
- 1.Rg4!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 3
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- B(g);OGATEB::QAB(H),XB(g)
- B(g);N_SPINB(g),OGATE,XQ(H)::B(G),XB(g)
- B(j);OGATE::QAB(H)
- S(f);N_GUARD::R1(C),XP(c)
- S(i);N_GUARD::S(D)
- S(i);N_GUARD::S(D),XS(i)
- P(b);OGATEB::QAB(H),XP(a)
- P(c);::B(G),XP(b)
- Tries
- Try
- K(B);P-FLIGHT,XP(a)
- Vars
- B(g);N_SPINB(g),OGATE,XQ(H)::B(G),XB(g)
- B(g);OGATEB::QAB(H),XB(g)
- B(j);OGATE::QAB(H)
- S(f);N_GUARD::R1(C),XP(c)
- S(i);N_GUARD::S(D)
- S(i);N_GUARD::S(D),XS(i)
- P(c);::B(G),XP(b)
- Refutation
- P(b);
- Try
- K(B);S_FLIGHT
- Vars
- B(g);N_SPINB(g),OGATE,XQ(H)::B(G),XB(g)
- B(g);OGATEB::QAB(H),XB(g)
- B(j);OGATE::QAB(H)
- S(f);N_GUARD::R1(C),XP(c)
- S(i);N_GUARD::S(D)
- S(i);N_GUARD::S(D),XS(i)
- P(c);::B(G),XP(b)
- Refutation
- P(b);
- Try
- S(D);CHECK
- Vars
- P(c);XS(D)::B(G),XP(b)
- Refutation
- S(f);XS(D)
- Try
- R(C);CHECK
- Vars
- S(i);SBLOCK,XR(C)::S(D)
- Refutation
- P(h);XR(C)
- Try
- R(E);N_PINP(d)
- Threat
- B(G),XP(b)
- Vars
- B(g);N_SPINB(g),OGATE,XQ(H)::B(G),XB(g)
- B(g);OGATEB::QAB(H),XB(g)
- S(i);N_GUARD::S(D)
- P(b);::B(G)
- Refutation
- S(f);
- Try
- R(E);
- Vars
- B(g);N_SPINB(g),OGATE,XQ(H)::B(G),XB(g)
- B(g);OGATEB::QAB(H),XB(g)
- S(f);N_GUARD::R1(C),XP(c)
- B(j);OGATE::QAB(H)
- S(i);N_GUARD::S(D)
- S(i);N_GUARD::S(D),XS(i)
- P(c);::B(G),XP(b)
- Refutation
- P(b);
- Try
- R(E);
- Vars
- B(g);N_SPINB(g),OGATE,XQ(H)::B(G),XB(g)
- B(g);OGATEB::QAB(H),XB(g)
- P(b);OGATEB::QAB(H),XP(a)
- S(f);N_GUARD::R1(C),XP(c)
- B(j);OGATE::QAB(H)
- S(i);N_GUARD::S(D)
- S(i);N_GUARD::S(D),XS(i)
- Refutation
- P(c);
- Try
- R(E);N_PINP(d)
- Threat
- QAB1(H),XB(g)
- Vars
- B(g);N_SPINB(g),OGATE,XQ(H)::B(G),XB(g)
- B(g);OGATEB::QAB(H),XB(g)
- S(i);N_GUARD::S(D)
- Refutation
- S(f);
- Try
- Actual
- R(C);
- Vars
- B(g);N_SPINB(g),OGATE,XQ(H)::B(G),XB(g)
- B(g);OGATEB::QAB(H),XB(g)
- P(b);OGATEB::QAB(H),XP(a)
- B(j);OGATE::QAB(H)
- S(f);N_GUARD::R1(C),XP(c)
- S(i);N_GUARD,SBLOCK::S(D)
- S(i);N_GUARD::R(C),XS(f)
- P(c);::B(G),XP(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).