MESON Chess Problem Database
Problem Display
PID: 67341 (q1n5/1r3bR1/3r4/1PN1Pk2/3R1pN1/p2Kp1BP/Q7/1B2b1n1 w - - 0 1)
Prins, Hendrik
1st Prize, Probleemblad, 1995
#2
11 + 11
| 145 | StrateGems | 1998 |
| 5417 | FIDE Album (1995-1997) | 2004 |
SOLUTION
- SOUND
- Sets
- 1...Rxd4+
- 2.Kxd4#
- 1...Rd5
- 2.Kc4#
- 1...Ra6
- 2.Rxf4#
- 1...Rdb6
- 2.Rxf4#
- 1...Rc6
- 2.Rxf4#
- 1...Re6
- 2.Kc4#
- 2.Rxf4#
- 1...Rf6
- 2.Rxf4#
- 1...Rh6
- 2.Rxf4#
- 1...Bf2
- 2.Kc3#
- 1...Bc3
- 2.Kxc3#
- 1...Bxg3
- 2.Kc3#
- 1...Bc4+
- 2.Kxc4#
- 1...Bd5
- 2.Rxf4#
- 1...Bh5
- 2.Kc4#
- 1...Be8
- 2.Kc4#
- 1...Se2
- 2.Kxe2#
- 1...Sf3
- 2.Ke2#
- 1...Sxh3
- 2.Ke2#
- 1...fxg3
- 2.Kxe3#
- 1...f3
- 2.Kxe3#
- 2.Sxe3#
- 1...Rxd4+
- Tries
- 1.Sxe3+?
- 1...fxe3
- 2.Kxe3#
- 1...Kxe5!
- 1...fxe3
- 1.Bxf4?
- threat
- 2.Kxe3#
- 2.Sxe3#
- 2.Rg5#
- 1...Bc4+
- 2.Kxc4#
- 1...Rxb5
- 2.Sxe3#
- 2.Rg5#
- 1...Bxa2
- 2.Sxe3#
- 2.Rg5#
- 1...Sxh3
- 2.Ke2#
- 2.Kxe3#
- 2.Sxe3#
- 1...Qa4
- 2.Sxe3#
- 2.Rg5#
- 1...Rg6
- 2.Kxe3#
- 2.Sxe3#
- 1...Rbb6
- 2.Sxe3#
- 2.Rg5#
- 1...Ra7
- 2.Sxe3#
- 2.Rg5#
- 1...Rc7
- 2.Sxe3#
- 2.Rg5#
- 1...Rbd7
- 2.Sxe3#
- 2.Rg5#
- 1...Re7
- 2.Sxe3#
- 2.Rg5#
- 1...Rb8
- 2.Sxe3#
- 2.Rg5#
- 1...Bd2
- 2.Rg5#
- 1...Bf2
- 2.Kc3#
- 2.Rg5#
- 1...Bh4
- 2.Kc3#
- 2.Kxe3#
- 2.Sxe3#
- 1...Bb3
- 2.Sxe3#
- 2.Rg5#
- 1...Bd5
- 2.Sxe3#
- 2.Rg5#
- 1...Bg6
- 2.Kxe3#
- 2.Kc4#
- 2.Sxe3#
- 2.Sh6#
- 1...Sf3
- 2.Ke2#
- 2.Kxe3#
- 2.Sxe3#
- 1...e2
- 2.Ke3#
- 2.Se3#
- 2.Rg5#
- 1...Rxd4+!
- threat
- 1.Bh4?
- threat
- 2.Rg5#
- 1...Rxd4+
- 2.Kxd4#
- 1...Bc4+
- 2.Kxc4#
- 1...Bxh4
- 2.Kc3#
- 1...Sxh3
- 2.Ke2#
- 1...Bg6
- 2.Kc4#
- 1...Sf3
- 2.Ke2#
- 1...Rg6!
- threat
- 1.Qe6+?
- 1...Rxe6
- 2.Kc4#
- 2.Rxf4#
- 1...Bxe6!
- 1...Rxe6
- 1.Qxf7+?
- 1...Rf6
- 2.Kc4#
- 2.Rxf4#
- 2.Qh5#
- 2.Qxf6#
- 1...Rxf7!
- 1...Rf6
- 1.Qf2?
- threat
- 2.Qxf4#
- 1...Rxd4+
- 2.Kxd4#
- 1...Bc4+
- 2.Kxc4#
- 1...Bxf2
- 2.Kc3#
- 1...Sxh3
- 2.Ke2#
- 1...Se2
- 2.Kxe2#
- 1...Sf3
- 2.Ke2#
- 1...f3
- 2.Kxe3#
- 2.Sxe3#
- 1...exf2!
- threat
- 1.h4?
- threat
- 2.Rg5#
- 1...Rxd4+
- 2.Kxd4#
- 1...Bc4+
- 2.Kxc4#
- 1...Rg6
- 2.Rxf4#
- 1...Sf3
- 2.Ke2#
- 1...Sh3
- 2.Ke2#
- 1...Bg6!
- threat
- 1.exd6?
- threat
- 2.Rxf4#
- 1...Bc4+
- 2.Kxc4#
- 1...Bxg3
- 2.Kc3#
- 1...Sxh3
- 2.Ke2#
- 1...fxg3
- 2.Kxe3#
- 1...Bg6
- 2.Rd5#
- 2.Qd5#
- 1...Se2
- 2.Kxe2#
- 1...f3
- 2.Kxe3#
- 2.Rf4#
- 1...Qa4!
- threat
- 1.Sxe3+?
- Keys
- 1.Qd5!
- threat
- 2.Kc4#
- 2.Rxf4#
- 2.Qe4#
- 1...Rxd5
- 2.Kc4#
- 1...Rxb5
- 2.Rxf4#
- 1...Bxg3
- 2.Kc3#
- 2.Kc4#
- 2.Qe4#
- 1...Bxd5
- 2.Rxf4#
- 1...Sxh3
- 2.Ke2#
- 2.Kc4#
- 2.Qe4#
- 1...fxg3
- 2.Kxe3#
- 2.Kc4#
- 2.Sxe3#
- 2.Qe4#
- 1...Rg6
- 2.e6#
- 1...Bg6
- 2.exd6#
- 1...Qa4
- 2.Qe4#
- 1...Rbb6
- 2.Kc4#
- 2.Rxf4#
- 1...Ra7
- 2.Kc4#
- 2.Rxf4#
- 1...Rc7
- 2.Kc4#
- 2.Rxf4#
- 1...Rbd7
- 2.Kc4#
- 2.Rxf4#
- 1...Re7
- 2.Kc4#
- 2.Rxf4#
- 1...Rb8
- 2.Kc4#
- 2.Rxf4#
- 1...Se2
- 2.Kxe2#
- 2.Kc4#
- 2.Qe4#
- 1...Sb6
- 2.Rxf4#
- 2.Qe4#
- 1...a2
- 2.Rxf4#
- 2.Qe4#
- 1...f3
- 2.Kxe3#
- 2.Kc4#
- 2.Sxe3#
- 2.Rf4#
- 2.Qe4#
- threat
- 1.Qd5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 16
- Sets
- R(g);CHECK,XR(F)::B(A)+K(C),XR(g)
- R(g);::B(A)+K(C)
- R(g);N_PINR(F)::R1(F),XP(e)
- B(a);::B(A)+K(C)
- B(a);::B(A)+K(C),XB(a)
- B(a);XB(D)::B(A)+K(C)
- B(i);CHECK::B(A)+K(C),XB(i)
- B(i);N_PINR(F)::R1(F),XP(e)
- B(i);::B(A)+K(C)
- S(b);::B(A)+K(C),XS(b)
- S(b);::B(A)+K(C)
- S(b);XP(E)::B(A)+K(C)
- P(e);XB(D)::B(A)+K(C),XP(d)
- Tries
- Try
- S(G);CHECK,XP(d)
- Vars
- P(e);XS(G)::B(A)+K(C),XP(e)
- Refutation
- K(f);P-FLIGHT,P_SPINP(e),XP(J)
- Try
- B(D);XP(e)
- Threat
- DUALS(3)
- Vars
- B(i);CHECK::B(A)+K(C),XB(i)
- B(a);::R1(K)
- Refutation
- R(g);CHECK,XR(F)
- Try
- B(D);
- Threat
- R1(K)
- Vars
- R(g);CHECK,XR(F)::B(A)+K(C),XR(g)
- B(i);CHECK::B(A)+K(C),XB(i)
- B(a);XB(D)::B(A)+K(C)
- S(b);XP(E)::B(A)+K(C)
- B(i);::B(A)+K(C)
- S(b);::B(A)+K(C)
- Refutation
- R(g);N_PINR(F)
- Try
- Q(B);CHECK
- Refutation
- B(i);XQ(B)
- Try
- Q(B);CHECK,XB(i)
- Refutation
- R(h);XQ(B)
- Try
- Q(B);P_PINP(e)
- Threat
- QAR1(B),XP(e)
- Vars
- R(g);CHECK,XR(F)::B(A)+K(C),XR(g)
- B(i);CHECK::B(A)+K(C),XB(i)
- B(a);N_SPINP(e),XQ(B)::B(A)+K(C)
- S(b);XP(E)::B(A)+K(C)
- S(b);::B(A)+K(C),XS(b)
- S(b);N_SPINP(e)::B(A)+K(C)
- Refutation
- P(d);N_SPINP(e),XQ(B)
- Try
- P(E);
- Threat
- R1(K)
- Vars
- R(g);CHECK,XR(F)::B(A)+K(C),XR(g)
- B(i);CHECK::B(A)+K(C),XB(i)
- R(g);N_PINR(F)::R1(F),XP(e)
- S(b);::B(A)+K(C)
- Refutation
- B(i);
- Try
- P(J);N_SPINR(F),XR(g)
- Threat
- R1(F),XP(e)
- Vars
- B(i);CHECK::B(A)+K(C),XB(i)
- B(a);XB(D)::B(A)+K(C)
- S(b);XP(E)::B(A)+K(C)
- P(e);XB(D)::B(A)+K(C),XP(d)
- S(b);::B(A)+K(C),XS(b)
- Refutation
- Q(j);
- Try
- Actual
- Q(B);N_SPINR(F)
- Threat
- DUALS(3)
- Vars
- R(g);P_PINR(F),XQ(B)::B(A)+K(C)
- R(h);XP(H)::R1(F),XP(e)
- B(i);XQ(B)::R1(F),XP(e)
- R(g);N_GUARD::QAR(B)+P(J)
- B(i);N_GUARD::QAR(B)+P(J),XR(g)
- Q(j);::QAB1(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).