MESON Chess Problem Database
Problem Display
PID: 9981 (q2B2r1/5R2/1QN3kp/R5Np/2B5/5K2/1n6/8 w - - 0 1)
Barnes, Barry Peter
5th HM., Die Schwalbe, 1961
#2
8 + 6
| 3174 | The Two-move Chess Problem Tradition and Development | 1966 |
SOLUTION
- SOUND
- Sets
- 1...Qxc6+
- 2.Qxc6#
- 1...Qxa5
- 2.Sxa5#
- 2.Se5#
- 1...Qa6
- 2.Se5#
- 2.Se7#
- 1...Qa7
- 2.Se5#
- 2.Sxa7#
- 2.Se7#
- 1...Qb8
- 2.Se5#
- 2.Se7#
- 2.Sxb8#
- 1...Qc8
- 2.Se5#
- 2.Se7#
- 1...Qxd8
- 2.Se7#
- 2.Sxd8#
- 1...Rg7
- 2.Rf6#
- 1...Sd1
- 2.Bd3#
- 2.Qb1#
- 1...Sd3
- 2.Bxd3#
- 1...Sa4
- 2.Bd3#
- 2.Qb1#
- 1...Sxc4
- 2.Qb1#
- 1...Qxc6+
- Tries
- 1.Ke2?
- threat
- 2.Se5#
- 2.Se7#
- 1...Qxc6
- 2.Qxc6#
- 1...Qxa5
- 2.Sxa5#
- 2.Se5#
- 1...Qxd8
- 2.Se7#
- 2.Sxd8#
- 1...Rxd8
- 2.Se7#
- 1...h4!
- threat
- 1.Kg3?
- threat
- 2.Se5#
- 2.Se7#
- 1...Qb8+
- 2.Se5#
- 2.Sxb8#
- 1...Qxc6
- 2.Qxc6#
- 1...Qxa5
- 2.Sxa5#
- 2.Se5#
- 1...Qxd8
- 2.Se7#
- 2.Sxd8#
- 1...Rxd8
- 2.Se7#
- 1...h4+!
- threat
- 1.Se4?
- threat
- 2.Se5#
- 2.Se7#
- 2.Qg1#
- 1...Qxc6
- 2.Qg1#
- 2.Qxc6#
- 1...Qxa5
- 2.Sxa5#
- 2.Se5#
- 2.Se7#
- 1...Qxd8
- 2.Se5#
- 2.Se7#
- 2.Sxd8#
- 1...Sxc4
- 2.Se5#
- 1...Qa7
- 2.Se5#
- 2.Sxa7#
- 2.Se7#
- 1...Qb8
- 2.Se5#
- 2.Se7#
- 2.Sxb8#
- 1...Qc8
- 2.Se5#
- 2.Se7#
- 1...h4
- 2.Se7#
- 2.Qg1#
- 1...Rg7!
- threat
- 1.Sh7?
- threat
- 2.Qg1#
- 1...Qxc6+
- 2.Qxc6#
- 1...Qxa5
- 2.Sxa5#
- 2.Se5#
- 2.Se7#
- 1...Qxd8
- 2.Se5#
- 2.Se7#
- 2.Sxd8#
- 1...Rg7
- 2.Sf8#
- 1...Qa7
- 2.Se5#
- 2.Sxa7#
- 2.Se7#
- 1...Qb8
- 2.Se5#
- 2.Se7#
- 2.Sxb8#
- 1...Qc8
- 2.Se5#
- 2.Se7#
- 1...Sxc4!
- threat
- 1.Bd5?
- threat
- 2.Se5#
- 2.Be4#
- 1...Qxc6
- 2.Be4#
- 2.Qxc6#
- 1...Qxa5
- 2.Sxa5#
- 2.Se5#
- 1...Qxd8
- 2.Be4#
- 1...Rxd8
- 2.Be4#
- 1...hxg5
- 2.Se5#
- 2.Se7#
- 1...Qc8
- 2.Se5#
- 1...Re8
- 2.Se5#
- 1...h4!
- threat
- 1.Qc5?
- threat
- 2.Qd6#
- 2.Qf5#
- 1...Qxc6+
- 2.Qxc6#
- 1...Qxa5
- 2.Se5#
- 2.Se7#
- 2.Qd6#
- 1...Qxd8
- 2.Qf5#
- 1...Rxd8
- 2.Qf5#
- 1...Sxc4
- 2.Qf5#
- 1...hxg5
- 2.Qd6#
- 2.Qxg5#
- 1...Qb8
- 2.Se7#
- 2.Qf5#
- 1...Qc8
- 2.Se5#
- 2.Se7#
- 1...Re8
- 2.Qf5#
- 1...h4!
- threat
- 1.Qb5?
- threat
- 2.Qf5#
- 1...Qxc6+
- 2.Qxc6#
- 1...Qxa5
- 2.Se5#
- 2.Se7#
- 1...hxg5
- 2.Qxg5#
- 1...Qc8
- 2.Se5#
- 2.Se7#
- 1...h4!
- threat
- 1.Ke2?
- Keys
- 1.Qg1!
- threat
- 2.Sh3#
- 2.Se4#
- 2.Sh7#
- 1...Qxc6+
- 2.Se4#
- 1...Qxa5
- 2.Se7#
- 1...Qxd8
- 2.Se5#
- 1...Sxc4
- 2.Qb1#
- 1...hxg5
- 2.Qxg5#
- 1...Qa7
- 2.Se5#
- 1...Qb8
- 2.Se7#
- 1...Qc8
- 2.Se5#
- 2.Se7#
- 1...Rg7
- 2.Rf6#
- threat
- 1.Qg1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 5
- REMOVED MATES = 1
- Sets
- Q(e);CHECK,OGATE,P_SPINQ(e),XS(F)::QAR(E),XQ(e)
- R(f);SBLOCK::R1(G)
- S(a);N_GUARD::B(B),XS(a)
- S(a);OGATE,XB(B)::QAB(E)
- Tries
- Try
- K(A);N_SPINS(F),S_FLIGHT
- Threat
- DUALS(2)
- Vars
- Q(e);OGATE,P_SPINQ(e),XS(F)::QAR(E),XQ(e)
- R(f);XB(H)::QAR(E)+S(F),DCHECK
- Refutation
- P(b);
- Try
- K(A);N_SPINS(F),P-FLIGHT
- Threat
- DUALS(2)
- Vars
- Q(e);OGATE,P_SPINQ(e),XS(F)::QAR(E),XQ(e)
- R(f);XB(H)::QAR(E)+S(F),DCHECK
- Refutation
- P(b);CHECK
- Try
- S(D);N_SPINS(F)
- Threat
- DUALS(3)
- Vars
- S(a);XB(B)::QAR(E)+S(F),DCHECK
- Refutation
- R(f);
- Try
- S(D);
- Threat
- QAR(E)
- Vars
- Q(e);CHECK,OGATE,P_SPINQ(e),XS(F)::QAR(E),XQ(e)
- R(f);N_GUARD::S(D)
- Refutation
- S(a);XB(B)
- Try
- B(B);N_SPINS(F)
- Threat
- DUALS(2)
- Vars
- Q(e);XB(H)::B(B)
- R(f);XB(H)::B(B)
- Q(e);::QAR(E)+S(F),DCHECK
- R(f);::QAR(E)+S(F),DCHECK
- Refutation
- P(b);
- Try
- Q(E);
- Threat
- DUALS(2)
- Vars
- Q(e);CHECK,OGATE,XS(F)::QAR(E),XQ(e)
- Q(e);N_PINS(F),XB(H)::QAB1(E)
- R(f);XB(H)::QAB1(E)
- S(a);XB(B)::QAB1(E)
- R(f);::QAB1(E)
- Refutation
- P(b);
- Try
- Q(E);
- Threat
- QAB1(E)
- Vars
- Q(e);CHECK,OGATE,XS(F)::QAR(E),XQ(e)
- P(d);OGATE,XS(D)::QAR1(E),XP(d)
- Refutation
- P(b);
- Try
- Actual
- Q(E);
- Threat
- DUALS(3)
- Vars
- Q(e);CHECK,XS(F)::QAR(E)+S(D)
- Q(e);N_PINS(F),XR(C)::S(F)
- Q(e);N_PINS(F),XB(H)::S(F)
- S(a);N_GUARD,XB(B)::QAB(E)
- P(d);OGATE,P_SPINP(d),XS(D)::QAR1(E),XP(d)
- Q(e);N_PINS(F)::S(F)
- R(f);SBLOCK::R1(G)
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