MESON Chess Problem Database
Problem Display
PID: 57114 (7b/P2p4/2rPN2R/1P1kP3/2N4r/5P2/B3P3/4KnQ1 w - - 0 1)
Zappas, Byron
1st Prize, British Chess Magazine, 1965
#2
12 + 6
| 3772 | FIDE Album (1965-1967) | 1976 |
SOLUTION
- SOUND
- Sets
- 1...Rh1
- 2.Sf4#
- 2.Qd4#
- 2.e4#
- 1...Rh2
- 2.Sf4#
- 2.Qd4#
- 2.e4#
- 1...Rh3
- 2.Sf4#
- 2.Qd4#
- 2.e4#
- 1...Rhxc4
- 2.Qd4#
- 1...Rd4
- 2.Qxd4#
- 1...Rf4
- 2.Sxf4#
- 1...Rh5
- 2.Sf4#
- 2.Qd4#
- 2.e4#
- 1...Rxh6
- 2.Sf4#
- 1...Rcxc4
- 2.Qc5#
- 1...Rc5
- 2.Qxc5#
- 1...Ra6
- 2.Sc7#
- 2.Qc5#
- 1...Rb6
- 2.Sc7#
- 2.Qc5#
- 1...Rxd6
- 2.Sc7#
- 2.Qc5#
- 1...Rc7
- 2.Sxc7#
- 1...Rh1
- Tries
- 1.Sb2+?
- 1...Rhc4
- 2.Qd4#
- 1...Rcc4
- 2.Qc5#
- 1...Kxe5!
- 1...Rhc4
- 1.Sd2+?
- 1...Rhc4
- 2.Qd4#
- 1...Rcc4
- 2.Qc5#
- 1...Kxe5!
- 1...Rhc4
- 1.Sa3+?
- 1...Rhc4
- 2.Qd4#
- 1...Rcc4
- 2.Qc5#
- 1...Kxe5!
- 1...Rhc4
- 1.Sa5+?
- 1...Rhc4
- 2.Qd4#
- 1...Rcc4
- 2.Qc5#
- 1...Kxe5!
- 1...Rhc4
- 1.Qe3?
- threat
- 2.Sb6#
- 1...Rhxc4
- 2.Sf4#
- 2.Qd4#
- 2.Qe4#
- 1...Rcxc4
- 2.Sc7#
- 2.Qc5#
- 2.a8Q#
- 2.a8B#
- 1...Bxe5
- 2.Qxe5#
- 1...Re4
- 2.Qxe4#
- 2.fxe4#
- 1...Rb6
- 2.Sxb6#
- 2.Sc7#
- 2.Qc5#
- 1...Sxe3!
- threat
- 1.Qg5?
- threat
- 2.Se3#
- 2.Sb6#
- 1...Rhxc4
- 2.e4#
- 1...Rcxc4
- 2.a8Q#
- 2.a8B#
- 1...Bxe5
- 2.Qxe5#
- 1...Rb6
- 2.Se3#
- 2.Sxb6#
- 1...Se3
- 2.Sxe3#
- 2.Sb6#
- 1...dxe6!
- threat
- 1.a8Q?
- threat
- 2.Sc7#
- 2.Qc5#
- 1...Rxc4
- 2.Qd4#
- 2.Qc5#
- 1...Rxh6
- 2.Sf4#
- 2.Sc7#
- 1...dxe6
- 2.Qxc6#
- 1...Bf6
- 2.Sc7#
- 1...Rd4
- 2.Qxd4#
- 1...Se3!
- threat
- 1.a8B?
- threat
- 2.Sc7#
- 2.Qc5#
- 1...Rxc4
- 2.Qd4#
- 2.Qc5#
- 1...Rxh6
- 2.Sf4#
- 2.Sc7#
- 1...dxe6
- 2.Bxc6#
- 1...Bf6
- 2.Sc7#
- 1...Rd4
- 2.Qxd4#
- 1...Se3!
- threat
- 1.Sb2+?
- Keys
- 1.Rh5!
- threat
- 2.Se3#
- 2.Sb6#
- 1...Kxe6
- 2.Qg8#
- 1...Rhxc4
- 2.Sf4#
- 1...Rxh5
- 2.Sf4#
- 1...Rcxc4
- 2.Sc7#
- 1...Bxe5
- 2.Rxe5#
- 1...dxe6
- 2.Sb6#
- 1...Rb6
- 2.Se3#
- 2.Sxb6#
- 2.Sc7#
- 1...Se3
- 2.Sxe3#
- 2.Sb6#
- threat
- 1.Rh5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 4
- REMOVED MATES = 5
- Sets
- R(b);N_GUARD,P_SPINR(b),XS(F)::QAR1(B)
- R(b);N_GUARD::QAR1(B),XR(b)
- R(b);N_GUARD::S(J),XR(b)
- R(b);N_GUARD,XR(K)::S(J)
- R(d);N_GUARD,P_SPINR(d),XS(F)::QAR1(B)
- R(d);N_GUARD::QAR1(B),XR(d)
- R(d);N_GUARD::S(J),XR(d)
- Tries
- Try
- S(F);CHECK
- Vars
- R(b);P_SPINR(b)::QAR1(B)
- R(d);P_SPINR(d)::QAR1(B)
- Refutation
- K(c);P-FLIGHT,XP(H)
- Try
- S(F);CHECK
- Vars
- R(b);P_SPINR(b)::QAR1(B)
- R(d);P_SPINR(d)::QAR1(B)
- Refutation
- K(c);P-FLIGHT,XP(H)
- Try
- S(F);CHECK
- Vars
- R(b);P_SPINR(b)::QAR1(B)
- R(d);P_SPINR(d)::QAR1(B)
- Refutation
- K(c);P-FLIGHT,XP(H)
- Try
- S(F);CHECK
- Vars
- R(b);P_SPINR(b)::QAR1(B)
- R(d);P_SPINR(d)::QAR1(B)
- Refutation
- K(c);P-FLIGHT,XP(H)
- Try
- Q(B);
- Threat
- B(C)+S(F),DCHECK
- Vars
- B(f);OGATE,XP(H)::QAR1(B),XB(f)
- Refutation
- S(a);XQ(B)
- Try
- Q(B);
- Threat
- DUALS(2)
- Vars
- R(b);N_GUARD,P_SPINR(b),XS(F)::P(D)
- R(d);P_SPINR(d),XS(F)::P=Q
- B(f);OGATE,P_SPINB(f),XP(H)::QAR1(B),XB(f)
- Refutation
- P(e);XS(J)
- Try
- P(L);P_PINR(d)
- Threat
- DUALS(2)
- Vars
- P(e);N_GUARD,XS(J)::QAB1(L),XR(d)
- B(f);::S(J)
- R(b);N_GUARD::QAR1(B),XR(b)
- Refutation
- S(a);
- Try
- P(L);P_PINR(d)
- Threat
- DUALS(2)
- Vars
- P(e);N_GUARD,XS(J)::B(L),XR(d)
- B(f);::S(J)
- R(b);N_GUARD::QAR1(B),XR(b)
- Refutation
- S(a);
- Try
- Actual
- R(K);
- Threat
- DUALS(2)
- Vars
- K(c);OGATEB,S_FLIGHT,XS(J)::QAB(B)
- R(b);N_GUARD,P_SPINR(b),XS(F)::S(J)
- R(b);N_GUARD,XR(K)::S(J)
- R(d);N_GUARD,P_SPINR(d),XS(F)::S(J)
- B(f);OGATE,P_SPINB(f),XP(H)::R1(K),XB(f)
- P(e);SBLOCK,XS(J)::B(C)+S(F),DCHECK
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