MESON Chess Problem Database
Problem Display
PID: 15893 (b1NR4/1RP2p2/2P2P1Q/nr1NkBr1/3p1pP1/1pp2p2/5B2/b3K1n1 w - - 0 1)
Zappas, Byron
1/2 Prize, The Problemist, 1988
#2
12 + 13
| 3297 | FIDE Album (1986-1988) | 1995 |
| 4640 | Chess Wizardry: The New ABC of Chess Problems | 1996 |
| 56 | The Problemist | 2014 |
| 23 | Die Schwalbe | 2015 |
SOLUTION
- SOUND
- Sets
- 1...Rxd5
- 2.Re8#
- 1...Rh5
- 2.Qxf4#
- 1...Rg6
- 2.Qxf4#
- 1...Rg7
- 2.Qxf4#
- 1...Rg8
- 2.Qxf4#
- 1...Rxd5
- Tries
- 1.Sxc3?
- threat
- 2.Bxd4#
- 2.Rxb5#
- 2.Re8#
- 1...Rxb7
- 2.Bxd4#
- 2.Rd5#
- 2.Re8#
- 1...Rxg4
- 2.Rxb5#
- 1...Rxf5
- 2.Re8#
- 1...Bxb7
- 2.Bxd4#
- 2.Re8#
- 1...Sxc6
- 2.Rxb5#
- 1...Sxb7
- 2.Bxd4#
- 2.Re8#
- 1...dxc3
- 2.Bd4#
- 2.Rxb5#
- 1...Rg6
- 2.Bxd4#
- 1...Rb4
- 2.Rd5#
- 2.Re8#
- 1...Rc5
- 2.Bxd4#
- 2.Re8#
- 1...Rd5
- 2.Rxd5#
- 2.Re8#
- 1...Rb6
- 2.Bxd4#
- 2.Rd5#
- 2.Re8#
- 1...Rg8
- 2.Bxd4#
- 2.Rxb5#
- 1...Se2
- 2.Rxb5#
- 2.Re8#
- 1...d3
- 2.Bd4#
- 2.Rxb5#
- 2.Re8#
- 1...Bxc3+!
- threat
- 1.Se3?
- threat
- 2.Rxb5#
- 2.Re8#
- 1...Rxb7
- 2.Rd5#
- 2.Re8#
- 1...Rxf5
- 2.Re8#
- 1...Bxb7
- 2.Re8#
- 1...Sxc6
- 2.Sc4#
- 2.Rxb5#
- 1...Sxb7
- 2.Sc4#
- 2.Re8#
- 1...dxe3
- 2.Rxb5#
- 1...fxe3
- 2.Bg3#
- 1...Rb4
- 2.Rd5#
- 2.Re8#
- 1...Rc5
- 2.Re8#
- 1...Rd5
- 2.Rxd5#
- 2.Re8#
- 1...Rb6
- 2.Rd5#
- 2.Re8#
- 1...Rg8
- 2.Rxb5#
- 1...d3
- 2.Rxb5#
- 1...Rg6!
- threat
- 1.Sb4?
- threat
- 2.Sd3#
- 2.Bxd4#
- 2.Rxb5#
- 2.Re8#
- 1...Rxb7
- 2.Sd3#
- 2.Bxd4#
- 2.Rd5#
- 2.Re8#
- 1...Rxg4
- 2.Rxb5#
- 1...Rxf5
- 2.Re8#
- 1...Bxb7
- 2.Sd3#
- 2.Bxd4#
- 2.Re8#
- 1...Sxc6
- 2.Sd3#
- 2.Sxc6#
- 2.Rxb5#
- 1...Sxb7
- 2.Sd3#
- 2.Bxd4#
- 2.Re8#
- 1...Rg6
- 2.Bxd4#
- 1...Rc5
- 2.Sd3#
- 2.Bxd4#
- 2.Re8#
- 1...Rd5
- 2.Sd3#
- 2.Rxd5#
- 2.Re8#
- 1...Rb6
- 2.Sd3#
- 2.Bxd4#
- 2.Rd5#
- 2.Re8#
- 1...Rg8
- 2.Sd3#
- 2.Bxd4#
- 2.Rxb5#
- 1...Se2
- 2.Sd3#
- 2.Rxb5#
- 2.Re8#
- 1...c2
- 2.Sd3#
- 2.Rxb5#
- 2.Re8#
- 1...d3
- 2.Sxd3#
- 2.Bd4#
- 2.Rxb5#
- 2.Re8#
- 1...Rxb4!
- threat
- 1.Sdb6?
- threat
- 2.Bxd4#
- 2.Re8#
- 1...Rxb6
- 2.Bxd4#
- 1...Rxf5
- 2.Re8#
- 1...Sxc6
- 2.Sc4#
- 1...Rg6
- 2.Bxd4#
- 1...Rb4
- 2.Rd5#
- 2.Re8#
- 1...Rd5
- 2.Rxd5#
- 2.Re8#
- 1...Rg8
- 2.Bxd4#
- 1...Se2
- 2.Re8#
- 1...c2
- 2.Re8#
- 1...d3
- 2.Bd4#
- 2.Re8#
- 1...Rxg4!
- threat
- 1.Sde7?
- threat
- 2.Bxd4#
- 2.Rxb5#
- 1...Rxb7
- 2.Bxd4#
- 2.Rd5#
- 1...Bxb7
- 2.Bxd4#
- 1...Sxc6
- 2.Sxc6#
- 2.Rxb5#
- 1...Sxb7
- 2.Bxd4#
- 1...Rg6
- 2.Bxd4#
- 1...Rb4
- 2.Rd5#
- 1...Rc5
- 2.Bxd4#
- 1...Rd5
- 2.Rxd5#
- 1...Rb6
- 2.Bxd4#
- 2.Rd5#
- 1...Se2
- 2.Rxb5#
- 1...c2
- 2.Rxb5#
- 1...d3
- 2.Bd4#
- 2.Rxb5#
- 1...Rxf5!
- threat
- 1.Rxb5?
- threat
- 2.Sxc3#
- 2.Se3#
- 2.Sb4#
- 2.Sdb6#
- 2.Sde7#
- 2.Re8#
- 1...Rxg4
- 2.Sxc3#
- 2.Se3#
- 2.Sb4#
- 2.Sxf4#
- 2.Sdb6#
- 2.Sde7#
- 1...Rxf5
- 2.Re8#
- 1...Sxc6
- 2.Sxc3#
- 2.Se3#
- 2.Sb4#
- 2.Sdb6#
- 2.Sde7#
- 1...Rg6
- 2.Re8#
- 2.Qxf4#
- 1...Rg8
- 2.Sxc3#
- 2.Se3#
- 2.Sb4#
- 2.Sxf4#
- 2.Sdb6#
- 2.Sde7#
- 2.Qxf4#
- 1...Sb7
- 2.Re8#
- 1...c2
- 2.Sc3#
- 2.Se3#
- 2.Sb4#
- 2.Sdb6#
- 2.Sde7#
- 2.Re8#
- 1...Bxc6!
- threat
- 1.Qf8?
- threat
- 2.Qd6#
- 2.Qe7#
- 2.Qe8#
- 1...Rxd5
- 2.Qe7#
- 1...Rxf5
- 2.Qe7#
- 2.Qe8#
- 1...Sxc6
- 2.Qd6#
- 1...Sxb7
- 2.Qe7#
- 2.Qe8#
- 1...Rg8
- 2.Qd6#
- 2.Qe7#
- 1...Sc4
- 2.Qe7#
- 2.Qe8#
- 1...Rxg4!
- threat
- 1.Sxc3?
- Keys
- 1.Sxf4!
- threat
- 2.Sd3#
- 1...Kxf4
- 2.Qh2#
- 1...Rxg4
- 2.Rxb5#
- 1...Rxf5
- 2.Re8#
- 1...Rg6
- 2.Bxd4#
- 1...d3
- 2.Sxd3#
- threat
- 1.Sxf4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 4
- REMOVED MATES = 4
- Sets
- R(i);SBLOCK,XS(D)::R(L)
- R(k);OGATE::QAB1(H),XP(g)
- Tries
- Try
- S(D);XP(d)
- Threat
- DUALS(3)
- Vars
- R(k);XP(C)::R(I),XR(i)
- R(k);XB(E)::R(L)
- S(h);XP(F)::R(I),XR(i)
- R(k);::B(B),XP(f)
- Refutation
- B(a);CHECK,XS(D)
- Try
- S(D);
- Threat
- DUALS(2)
- Vars
- R(k);XB(E)::R(L)
- B(m);XR(I)::R(L)
- P(f);XS(D)::R(I),XR(i)
- P(g);OGATEB,XS(D)::B(B)
- R(i);::R(L)
- R(k);::R(I),XR(i)
- P(f);::R(I),XR(i)
- Refutation
- R(k);
- Try
- S(D);
- Threat
- DUALS(4)
- Vars
- R(k);XP(C)::R(I),XR(i)
- R(k);XB(E)::R(L)
- R(k);::B(B),XP(f)
- Refutation
- R(i);XS(D)
- Try
- S(D);
- Threat
- DUALS(2)
- Vars
- R(i);XS(D)::B(B),XP(f)
- R(k);XB(E)::R(L)
- S(h);N_GUARD,XP(F)::S(D)
- R(k);::B(B),XP(f)
- S(b);::R(L)
- P(d);::R(L)
- Refutation
- R(k);XP(C)
- Try
- S(D);
- Threat
- DUALS(2)
- Vars
- B(m);XR(I)::B(B),XP(f)
- S(h);XR(I)::B(B),XP(f)
- R(k);::B(B),XP(f)
- R(i);N_GUARD::R1(L)
- R(i);::B(B),XP(f)
- R(i);N_GUARD::R1(L),XR(i)
- S(b);::R(I),XR(i)
- P(d);::R(I),XR(i)
- Refutation
- R(k);XB(E)
- Try
- R(I);XR(i)
- Threat
- DUALS(6)
- Vars
- R(k);XB(E)::R(L)
- S(h);::R(L)
- Refutation
- B(m);XP(F)
- Try
- Q(H);
- Threat
- DUALS(3)
- Vars
- R(i);XS(D)::QAR2(H)
- S(h);XP(F)::QAB1(H)
- Refutation
- R(k);XP(C)
- Try
- Actual
- S(D);XP(g)
- Threat
- S(D)
- Vars
- K(j);OGATEB,P_SPINR(k),S_FLIGHT,XS(D)::QAB(H)
- R(k);XP(C)::R(I),XR(i)
- R(k);XB(E)::R(L)
- R(k);::B(B),XP(f)
- P(f);::S(D),XP(f)
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