MESON Chess Problem Database
Problem Display
PID: 15741 (KQN5/P2n4/p1pp2r1/2kN4/1p6/qP5b/p2RB3/B3n3 w - - 0 1)
Zappas, Byron
Probleemblad, 1987
#2
9 + 11
| 3297 | FIDE Album (1986-1988) | 1995 |
| 56 | The Problemist | 2007 |
SOLUTION
- SOUND
- Sets
- 1...Qc1
- 2.Qxb4#
- 1...Qb2
- 2.Qxb4#
- 1...Rg1
- 2.Qxd6#
- 1...Rg2
- 2.Qxd6#
- 1...Rg3
- 2.Qxd6#
- 1...Rg4
- 2.Qxd6#
- 1...Rg5
- 2.Qxd6#
- 1...Rg7
- 2.Qxd6#
- 1...Rg8
- 2.Qxd6#
- 1...Be6
- 2.Qxd6#
- 1...Se5
- 2.Qb6#
- 1...Sb6+
- 2.Qxb6#
- 1...Sf6
- 2.Qxd6#
- 2.Qb6#
- 1...Sf8
- 2.Qb6#
- 1...cxd5
- 2.Qc7#
- 1...Qc1
- Tries
- 1.Se3?
- threat
- 2.Bd4#
- 1...Sb6+
- 2.Qxb6#
- 1...Rg4
- 2.Qxd6#
- 1...Sc2
- 2.Rxc2#
- 1...Sd3
- 2.Rc2#
- 1...Sf3
- 2.Rc2#
- 1...Qb2!
- threat
- 1.Sf4?
- threat
- 2.Bd4#
- 1...Sb6+
- 2.Qxb6#
- 1...Sc2
- 2.Rxc2#
- 1...Sd3
- 2.Rc2#
- 1...Sf3
- 2.Rc2#
- 1...Qb2!
- threat
- 1.Sdb6?
- threat
- 2.Bd4#
- 1...Sxb6+
- 2.Qxb6#
- 1...Qb2
- 2.Sa4#
- 1...Rg4
- 2.Sxd7#
- 2.Qxd6#
- 1...Sc2
- 2.Rxc2#
- 1...Sf3
- 2.Rc2#
- 1...Sd3!
- threat
- 1.Sf6?
- threat
- 2.Se4#
- 2.Bd4#
- 2.Qxd6#
- 1...Sb6+
- 2.Qxb6#
- 1...Sxf6
- 2.Qxd6#
- 2.Qb6#
- 1...Sxb8
- 2.Se4#
- 2.Bd4#
- 1...Qb2
- 2.Se4#
- 2.Qxd6#
- 1...Rg4
- 2.Sxd7#
- 2.Qxd6#
- 1...Bg2
- 2.Sxd7#
- 2.Bd4#
- 2.Qxd6#
- 1...Bf5
- 2.Bd4#
- 2.Qxd6#
- 1...Sc2
- 2.Se4#
- 2.Rxc2#
- 2.Qxd6#
- 1...Sd3
- 2.Rc2#
- 1...Sf3
- 2.Se4#
- 2.Rc2#
- 2.Qxd6#
- 1...d5
- 2.Bd4#
- 2.Qd6#
- 1...Rxf6!
- threat
- 1.Sde7?
- threat
- 2.Bd4#
- 1...Sb6+
- 2.Qxb6#
- 1...Rg4
- 2.Qxd6#
- 1...Sc2
- 2.Rxc2#
- 1...Sd3
- 2.Rc2#
- 1...Sf3
- 2.Rc2#
- 1...Qb2!
- threat
- 1.Scb6?
- threat
- 2.Bd4#
- 1...Sxb6+
- 2.Qxb6#
- 1...cxd5
- 2.Qc7#
- 1...Qb2
- 2.Sa4#
- 1...Rg4
- 2.Sxd7#
- 1...Sc2
- 2.Rxc2#
- 1...Sf3
- 2.Rc2#
- 1...Sd3!
- threat
- 1.Sce7?
- threat
- 2.Bd4#
- 1...Sb6+
- 2.Qxb6#
- 1...Qb2
- 2.Qxb4#
- 1...Sc2
- 2.Rxc2#
- 1...Sd3
- 2.Rc2#
- 1...Sf3
- 2.Rc2#
- 1...Rg4!
- threat
- 1.Se3?
- Keys
- 1.Sc7!
- threat
- 2.Bd4#
- 1...Sb6+
- 2.Qxb6#
- 1...Qb2
- 2.Sxa6#
- 1...Rg4
- 2.Se6#
- 1...Sc2
- 2.Rxc2#
- 1...Sd3
- 2.Rc2#
- 1...Sf3
- 2.Rc2#
- threat
- 1.Sc7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 3
- REMOVED MATES = 11
- Sets
- Q(c);N_GUARD::QAB1(H),XP(e)
- R(j);N_GUARD::QAB1(H),XP(i)
- B(d);S_CUTR(j)::QAB1(H),XP(i)
- S(k);N_GUARD::QAB1(H)
- S(k);CHECK,N_GUARD::QAB1(H),XS(k)
- P(h);OGATEB,XS(E)::QAR2(H)
- Tries
- Try
- S(E);
- Threat
- B(A)
- Vars
- S(k);CHECK,N_GUARD::QAB1(H),XS(k)
- R(j);N_GUARD::QAB1(H),XP(i)
- S(a);N_GUARD::R(B),XS(a)
- S(a);N_GUARD::R(B)
- Refutation
- Q(c);
- Try
- S(E);
- Threat
- B(A)
- Vars
- S(k);CHECK,N_GUARD::QAB1(H),XS(k)
- S(a);N_GUARD::R(B),XS(a)
- S(a);N_GUARD::R(B)
- Refutation
- Q(c);
- Try
- S(E);
- Threat
- B(A)
- Vars
- S(k);CHECK,OGATE,XS(E)::QAB1(H),XS(k)
- Q(c);N_GUARD::S(E)
- S(a);N_GUARD::R(B),XS(a)
- S(a);N_GUARD::R(B)
- Refutation
- S(a);
- Try
- S(E);
- Threat
- DUALS(3)
- Vars
- S(k);CHECK,N_GUARD::QAB1(H),XS(k)
- S(a);N_GUARD::R(B)
- Refutation
- R(j);XS(E)
- Try
- S(E);
- Threat
- B(A)
- Vars
- S(k);CHECK,N_GUARD::QAB1(H),XS(k)
- R(j);N_GUARD::QAB1(H),XP(i)
- S(a);N_GUARD::R(B),XS(a)
- S(a);N_GUARD::R(B)
- Refutation
- Q(c);
- Try
- S(I);
- Threat
- B(A)
- Vars
- S(k);CHECK,OGATE,XS(I)::QAB1(H),XS(k)
- P(h);OGATEB,XS(E)::QAR2(H)
- Q(c);N_GUARD::S(I)
- R(j);S_CUTB(d)::S(I),XS(k)
- S(a);N_GUARD::R(B),XS(a)
- S(a);N_GUARD::R(B)
- Refutation
- S(a);
- Try
- S(I);
- Threat
- B(A)
- Vars
- S(k);CHECK,N_GUARD::QAB1(H),XS(k)
- Q(c);N_GUARD::QAB1(H),XP(e)
- S(a);N_GUARD::R(B),XS(a)
- S(a);N_GUARD::R(B)
- Refutation
- R(j);
- Try
- Actual
- S(E);
- Threat
- B(A)
- Vars
- S(k);CHECK,N_GUARD::QAB1(H),XS(k)
- Q(c);N_GUARD::S(E),XP(g)
- R(j);N_GUARD,S_CUTB(d)::S(E)
- S(a);N_GUARD::R(B),XS(a)
- S(a);N_GUARD::R(B)
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