MESON Chess Problem Database
Problem Display
PID: 32532 (6b1/1Q5p/7b/p2R2n1/P3k1P1/3R1N1p/K2B4/8 w - - 0 1)
Restad, Birger
De Problemist, 1929
#2
8 + 7
SOLUTION
- SOUND
- Sets
- 1...Bg7
- 2.Sxg5#
- 1...Bf8
- 2.Sxg5#
- 1...Bxd5+
- 2.Qxd5#
- 1...Se6
- 2.R5d4#
- 2.Rd6#
- 2.Rd7#
- 2.Rd8#
- 1...Sf7
- 2.R5d4#
- 2.Rd6#
- 2.Rd7#
- 2.Rd8#
- 1...Bg7
- Tries
- 1.Ka1?
- threat
- 2.R5d4#
- 1...Bxd5
- 2.Qxd5#
- 1...Sxf3!
- threat
- 1.Kb1?
- threat
- 2.R5d4#
- 1...Bxd5
- 2.Qxd5#
- 1...Sxf3!
- threat
- 1.Kb2?
- threat
- 2.R5d4#
- 1...Bxd5
- 2.Qxd5#
- 1...Sxf3!
- threat
- 1.Se5?
- threat
- 2.Rd4#
- 1...Bxd5+
- 2.Qxd5#
- 1...Se6
- 2.Rxa5#
- 2.Rb5#
- 2.Rc5#
- 1...Sf3!
- threat
- 1.Bxg5?
- threat
- 2.Sd2#
- 2.Re3#
- 1...Bxd5+
- 2.Qxd5#
- 1...Bxg5!
- threat
- 1.Qc6?
- threat
- 2.Qc4#
- 1...Bxd5+
- 2.Qxd5#
- 1...Bg7
- 2.Sxg5#
- 1...Se6
- 2.R5d4#
- 2.Rd6#
- 2.Rd7#
- 2.Rd8#
- 1...Sxf3!
- threat
- 1.Qb3?
- threat
- 2.R3d4#
- 2.R5d4#
- 2.Re5#
- 2.Qc4#
- 1...Bxd5
- 2.Rd4#
- 2.Qxd5#
- 1...Bg7
- 2.Sxg5#
- 1...Se6
- 2.Re5#
- 1...Sf7
- 2.R3d4#
- 2.R5d4#
- 2.Qc4#
- 1...Sxf3!
- threat
- 1.Qb5?
- threat
- 2.Qc4#
- 1...Bxd5+
- 2.Qxd5#
- 1...Bg7
- 2.Sxg5#
- 1...Se6
- 2.Re5#
- 1...Sxf3!
- threat
- 1.Qd7?
- threat
- 2.Qf5#
- 1...Bxd5+
- 2.Qxd5#
- 1...Se6
- 2.Re5#
- 1...Be6!
- threat
- 1.Qe7+?
- 1...Se6
- 2.R5d4#
- 1...Be6!
- 1...Se6
- 1.Qf7?
- threat
- 2.Re3#
- 2.R3d4#
- 2.R5d4#
- 2.Qf4#
- 2.Qf5#
- 1...Sxf3
- 2.Qxf3#
- 2.Qf5#
- 1...Sxf7
- 2.R5d4#
- 1...Bg7
- 2.Sxg5#
- 2.Re3#
- 2.Qf4#
- 2.Qf5#
- 1...Se6
- 2.Qf5#
- 1...Bxf7!
- threat
- 1.Qxh7+?
- 1...Bxh7
- 2.R5d4#
- 1...Sxh7!
- 1...Bxh7
- 1.Ka1?
- Keys
- 1.Qb1!
- threat
- 2.Qe1#
- 1...Bxd5+
- 2.Rb3#
- 1...Sxf3
- 2.Rd4#
- 1...Se6
- 2.Re5#
- 1...Sf7
- 2.R5d4#
- threat
- 1.Qb1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 3
- REMOVED MATES = 2
- Sets
- B(e);N_GUARD::S(D),XS(d)
- B(g);CHECK,OGATE,P_SPINB(g),XR(G)::QAB1(H),XB(g)
- Tries
- Try
- K(A);N_SPINR(G),P-FLIGHT
- Threat
- QAB(H)+R(G),DCHECK
- Vars
- B(g);OGATE,P_SPINB(g),XR(G)::QAB1(H),XB(g)
- Refutation
- S(d);XS(D)
- Try
- K(A);N_SPINR(G),S_FLIGHT
- Threat
- QAB(H)+R(G),DCHECK
- Vars
- B(g);OGATE,P_SPINB(g),XR(G)::QAB1(H),XB(g)
- Refutation
- S(d);XS(D)
- Try
- K(A);N_SPINR(G),P-FLIGHT
- Threat
- QAB(H)+R(G),DCHECK
- Vars
- B(g);OGATE,P_SPINB(g),XR(G)::QAB1(H),XB(g)
- Refutation
- S(d);XS(D)
- Try
- S(D);
- Threat
- R1(C)
- Vars
- B(g);CHECK,OGATE,P_SPINB(g),XR(G)::QAB1(H),XB(g)
- Refutation
- S(d);
- Try
- B(B);XS(d)
- Threat
- DUALS(2)
- Vars
- B(g);CHECK,OGATE,P_SPINB(g),XR(G)::QAB1(H),XB(g)
- Refutation
- B(e);XB(B)
- Try
- Q(H);
- Threat
- QAR2(H)
- Vars
- B(g);CHECK,OGATE,P_SPINB(g),XR(G)::QAB1(H),XB(g)
- B(e);N_GUARD::S(D),XS(d)
- Refutation
- S(d);XS(D)
- Try
- Q(H);N_SPINR(G)
- Threat
- DUALS(4)
- Vars
- B(e);N_GUARD::S(D),XS(d)
- S(d);::R1(G)
- Refutation
- S(d);XS(D)
- Try
- Q(H);
- Threat
- QAR2(H)
- Vars
- B(g);CHECK,OGATE,XR(G)::QAB1(H),XB(g)
- B(e);N_GUARD::S(D),XS(d)
- S(d);N_PINR(G)::R1(G)
- Refutation
- S(d);XS(D)
- Try
- Q(H);
- Threat
- QAB1(H)
- Vars
- B(g);CHECK,OGATE,XR(G)::QAB1(H),XB(g)
- S(d);N_PINR(G)::R1(G)
- Refutation
- B(g);
- Try
- Q(H);CHECK
- Vars
- S(d);N_PINR(G),P_SPINS(d)::R1(G)
- Refutation
- B(g);P_SPINB(g)
- Try
- Q(H);N_SPINR(G)
- Threat
- DUALS(5)
- Vars
- S(d);XQ(H)::R1(G)
- S(d);::QAB1(H)
- Refutation
- B(g);P_PINR(G),XQ(H)
- Try
- Q(H);CHECK,XP(f)
- Vars
- B(g);N_PINR(G),XQ(H)::R1(G)
- Refutation
- S(d);XQ(H)
- Try
- Actual
- Q(H);
- Threat
- QAR(H)
- Vars
- B(g);CHECK,SBLOCK,XR(G)::QAB(H)+R(C)
- S(d);SBLOCK,XS(D)::QAB(H)+R(C),DCHECK
- S(d);N_PINR(G)::R1(G)
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