MESON Chess Problem Database
Problem Display
PID: 64769 (BK6/3Npp2/2NP1p1B/R7/4k1P1/p1r2Rp1/n1P1p1P1/bQ6 w - - 0 1)
Kozdon, Baldur
3rd Prize, British Chess Magazine, 1980
#2
12 + 10
| 3752 | FIDE Album (1980-1982) | 1988 |
SOLUTION
- SOUND
- Sets
- 1...Rxc2
- 2.Re3#
- 2.Qxc2#
- 1...Rb3+
- 2.cxb3#
- 1...Rd3
- 2.cxd3#
- 1...Re3
- 2.Rxe3#
- 2.Rf4#
- 1...Rc4
- 2.Re3#
- 2.c3#
- 1...Rc5
- 2.c4#
- 1...Rxc6
- 2.c3#
- 1...f5
- 2.Re5#
- 1...exd6
- 2.Sxf6#
- 1...e5
- 2.Sxf6#
- 1...e6
- 2.Sxf6#
- 1...Rxc2
- Tries
- 1.Sb4+?
- 1...Rc6
- 2.c3#
- 1...Kd4!
- 1...Rc6
- 1.Sd4+?
- 1...Rc6
- 2.c3#
- 1...Kxd4!
- 1...Rc6
- 1.Sce5+?
- 1...Rc6
- 2.c3#
- 1...Kd4!
- 1...Rc6
- 1.Sa7+?
- 1...Rc6
- 2.c3#
- 1...Kd4!
- 1...Rc6
- 1.Sxe7+?
- 1...Rc6
- 2.c3#
- 1...Kd4!
- 1...Rc6
- 1.Sd8+?
- 1...Rc6
- 2.c3#
- 1...Kd4!
- 1...Rc6
- 1.Sc5+?
- 1...Rxc5
- 2.c4#
- 1...Kd5!
- 1...Rxc5
- 1.Rxc3?
- threat
- 2.Re3#
- 1...Sxc3
- 2.Qb4#
- 1...e1Q
- 2.Qxe1#
- 1...e1R
- 2.Qxe1#
- 1...Bxc3!
- threat
- 1.Rxf6?
- threat
- 2.Re5#
- 1...Rb3+
- 2.cxb3#
- 1...Rxc2
- 2.Qxc2#
- 1...Rxc6
- 2.c3#
- 1...exf6
- 2.Sxf6#
- 1...Rc5
- 2.c4#
- 1...Rd3
- 2.cxd3#
- 1...Re3
- 2.Rf4#
- 1...Rf3
- 2.gxf3#
- 1...Rc4
- 2.c3#
- 1...e5
- 2.Rxe5#
- 1...exd6!
- threat
- 1.Qxa2?
- threat
- 2.Qd5#
- 1...Rd3
- 2.Sc5#
- 2.cxd3#
- 1...Rc4
- 2.Re3#
- 1...Rc5
- 2.Sxc5#
- 2.Re3#
- 1...e6
- 2.Sxf6#
- 1...Rb3+!
- threat
- 1.Qg1?
- threat
- 2.Rf4#
- 2.Qd4#
- 1...Rb3+
- 2.Sb4#
- 1...Rxc2
- 2.Re3#
- 2.Qe3#
- 1...Rxf3
- 2.Sb4#
- 2.Sd4#
- 2.Sce5#
- 2.Sa7#
- 2.Sxe7#
- 2.Sd8#
- 1...Rxc6
- 2.Bxc6#
- 2.Rf4#
- 2.Qe3#
- 1...Rd3
- 2.Sd4#
- 2.Rf4#
- 2.cxd3#
- 1...Re3
- 2.Rxe3#
- 2.Rf4#
- 2.Qxe3#
- 1...Rc4
- 2.Re3#
- 2.Rf4#
- 2.Qe3#
- 1...e5
- 2.Sxf6#
- 1...Rc5!
- threat
- 1.Qb4+?
- 1...Rc4
- 2.Re3#
- 1...Sxb4!
- 1...Rc4
- 1.Qb5?
- threat
- 2.Qd5#
- 2.Qf5#
- 1...Rxf3
- 2.Qd5#
- 1...Rxc6
- 2.Qd3#
- 2.Qd5#
- 1...Rc5
- 2.Qd3#
- 1...Rd3
- 2.Qxd3#
- 2.Qf5#
- 2.cxd3#
- 1...Sb4
- 2.Qf5#
- 1...f5
- 2.Qd5#
- 2.Qe5#
- 2.Qxf5#
- 1...e5
- 2.Sxf6#
- 2.Qd5#
- 1...e6
- 2.Sxf6#
- 1...Rb3!
- threat
- 1.Qb6?
- threat
- 2.Rf4#
- 2.Qd4#
- 1...Rxc2
- 2.Re3#
- 2.Qe3#
- 1...Rxf3
- 2.Sb4#
- 2.Sd4#
- 2.Sce5#
- 2.Sa7#
- 2.Sxe7#
- 2.Sd8#
- 1...Rxc6
- 2.Bxc6#
- 2.Re3#
- 2.Rf4#
- 2.Qe3#
- 1...Rb3
- 2.Sb4#
- 2.Sd4#
- 2.Sce5#
- 2.Sa7#
- 2.Sxe7#
- 2.Sd8#
- 2.Rf4#
- 1...Rd3
- 2.Sd4#
- 2.Rf4#
- 2.cxd3#
- 1...Re3
- 2.Sb4#
- 2.Sd4#
- 2.Sce5#
- 2.Sa7#
- 2.Sxe7#
- 2.Sd8#
- 2.Rxe3#
- 2.Rf4#
- 2.Qxe3#
- 1...Rc4
- 2.Re3#
- 2.Rf4#
- 2.Qe3#
- 1...e5
- 2.Sxf6#
- 1...Rc5!
- threat
- 1.dxe7?
- threat
- 2.Sxf6#
- 2.e8Q#
- 2.e8R#
- 1...Rb3+
- 2.cxb3#
- 1...Rxc2
- 2.Re3#
- 2.Qxc2#
- 1...Rxc6
- 2.c3#
- 1...Rc5
- 2.c4#
- 1...e1Q
- 2.Sxf6#
- 2.e8Q#
- 2.e8R#
- 1...e1S
- 2.Sxf6#
- 2.e8Q#
- 2.e8R#
- 1...e1B
- 2.Sxf6#
- 2.e8Q#
- 2.e8R#
- 1...e1R
- 2.Sxf6#
- 2.e8Q#
- 2.e8R#
- 1...Rd3
- 2.cxd3#
- 1...Re3
- 2.Rxe3#
- 2.Rf4#
- 1...Rc4
- 2.Re3#
- 2.c3#
- 1...Bb2
- 2.Sxf6#
- 2.e8Q#
- 2.e8R#
- 1...Sc1
- 2.Sxf6#
- 2.e8Q#
- 2.e8R#
- 1...Sb4
- 2.Sxf6#
- 2.e8Q#
- 2.e8R#
- 1...f5
- 2.Sf6#
- 2.Re5#
- 2.e8Q#
- 2.e8R#
- 1...Rxf3!
- threat
- 1.Sb4+?
- Keys
- 1.Rd3!
- threat
- 2.Rd4#
- 1...Rb3+
- 2.Sb4#
- 1...Rxc2
- 2.Re3#
- 1...Rxd3
- 2.cxd3#
- 1...Rxc6
- 2.Bxc6#
- 1...Rc4
- 2.Re3#
- 1...Rc5
- 2.Sxc5#
- 1...e5
- 2.Sxf6#
- threat
- 1.Rd3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 3
- ADDED MATES = 2
- REMOVED MATES = 3
- Sets
- R(e);CHECK,OGATE::QAB(A)+P(B),XR(e)
- R(e);OGATE::P(B),XR(e)
- R(e);OGATE::QAB(A)+P(B)
- R(e);OGATE,P_SPINR(e),XS(G)::QAB(A)+P(B)
- P(h);N_GUARD::R1(F)
- P(i);N_GUARD,XP(H)::S(J),XP(h)
- P(i);N_GUARD::S(J),XP(h)
- Tries
- Try
- S(G);CHECK
- Vars
- R(e);OGATE,P_SPINR(e)::QAB(A)+P(B)
- Refutation
- K(g);P-FLIGHT
- Try
- S(G);CHECK
- Vars
- R(e);OGATE,P_SPINR(e)::QAB(A)+P(B)
- Refutation
- K(g);P-FLIGHT,XS(G)
- Try
- S(G);CHECK
- Vars
- R(e);OGATE,P_SPINR(e)::QAB(A)+P(B)
- Refutation
- K(g);P-FLIGHT
- Try
- S(G);CHECK
- Vars
- R(e);OGATE,P_SPINR(e)::QAB(A)+P(B)
- Refutation
- K(g);P-FLIGHT
- Try
- S(G);CHECK,XP(i)
- Vars
- R(e);OGATE,P_SPINR(e)::QAB(A)+P(B)
- Refutation
- K(g);P-FLIGHT
- Try
- S(G);CHECK
- Vars
- R(e);OGATE,P_SPINR(e)::QAB(A)+P(B)
- Refutation
- K(g);P-FLIGHT
- Try
- S(J);CHECK
- Vars
- R(e);OGATE,XS(J)::QAB(A)+P(B)
- Refutation
- K(g);S_FLIGHT
- Try
- R(D);XR(e)
- Threat
- R1(D)
- Vars
- S(b);N_GUARD,XR(D)::QAR(A)
- P(c);OGATEB::QAR(A),XQ(c)
- P(c);OGATEB::QAR(A),XR(c)
- Refutation
- B(a);XR(D)
- Try
- R(D);XP(h)
- Threat
- R1(F)
- Vars
- R(e);CHECK,OGATE::QAB(A)+P(B),XR(e)
- R(e);OGATE,P_SPINR(e),XP(B)::QAB(A),XR(e)
- R(e);OGATE,P_SPINR(e),XS(G)::QAB(A)+P(B)
- P(i);XR(D)::S(J),XP(i)
- R(e);OGATE::QAB(A)+P(B)
- R(e);OGATE::P(B),XR(e)
- R(e);SBLOCK::R1(D)
- R(e);OGATE::P(C),XR(e)
- P(i);::R1(F),XP(i)
- Refutation
- P(i);XP(H)
- Try
- Q(A);XS(b)
- Threat
- QAB1(A)
- Vars
- R(e);N_GUARD::R1(D)
- P(i);N_GUARD::S(J),XP(h)
- Refutation
- R(e);CHECK
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- R(e);CHECK,N_GUARD::B(K)+S(G)
- P(i);N_GUARD::S(J),XP(h)
- Refutation
- R(e);
- Try
- Q(A);CHECK
- Vars
- R(e);P_SPINR(e)::R1(D)
- Refutation
- S(b);XQ(A)
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- R(e);XR(D)::QAB1(A)
- R(e);N_GUARD::QAB1(A)
- S(b);::QAB1(A)
- P(i);N_GUARD::S(J),XP(h)
- Refutation
- R(e);P_PINQ(A)
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- P(i);N_GUARD::S(J),XP(h)
- Refutation
- R(e);
- Try
- P(H);XP(i)
- Threat
- DUALS(3)
- Vars
- R(e);CHECK,OGATE::QAB(A)+P(B),XR(e)
- R(e);OGATE,P_SPINR(e),XS(G)::QAB(A)+P(B)
- R(e);OGATE::QAB(A)+P(B)
- R(e);OGATE::P(B),XR(e)
- Refutation
- R(e);XR(D)
- Try
- Actual
- R(D);
- Threat
- R1(D)
- Vars
- R(e);CHECK,N_GUARD::B(K)+S(G)
- R(e);N_GUARD,XP(B)::R1(D)
- R(e);OGATE,XR(D)::P(B),XR(e)
- R(e);OGATE,P_SPINR(e),XS(G)::B(K),XR(e)
- R(e);N_GUARD::R1(D)
- R(e);N_GUARD::S(J),XR(e)
- P(i);N_GUARD::S(J),XP(h)
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