MESON Chess Problem Database
Problem Display
PID: 17475 (q1n5/r2p4/1PPkNB2/8/p2K4/2RQR3/1N6/8 w - - 0 1)
Hassberg, Eric Manfred
American Chess Bulletin, 1947
#2
9 + 6
SOLUTION
- SOUND
- Sets
- 1...dxc6
- 2.Kc4#
- 1...dxe6
- 2.Ke4#
- 1...dxc6
- Tries
- 1.Sg5?
- threat
- 2.Ke4#
- 2.Sf7#
- 1...Qxc6
- 2.Sf7#
- 1...dxc6
- 2.Kc4#
- 2.Ke4#
- 1...Ra5
- 2.Sf7#
- 1...Se7
- 2.Sf7#
- 2.Be5#
- 2.Bxe7#
- 1...Sxb6!
- threat
- 1.Sc7?
- threat
- 2.Ke4#
- 2.Sb5#
- 2.Se8#
- 1...Qxc6
- 2.Se8#
- 1...Sxb6
- 2.Sb5#
- 1...dxc6
- 2.Kc4#
- 2.Ke4#
- 1...Ra5
- 2.Se8#
- 1...Se7
- 2.Sb5#
- 2.Be5#
- 2.Bxe7#
- 1...Rxc7!
- threat
- 1.Sg7?
- threat
- 2.Ke4#
- 2.Sf5#
- 2.Se8#
- 1...Qxc6
- 2.Sf5#
- 2.Se8#
- 1...dxc6
- 2.Kc4#
- 2.Ke4#
- 1...Ra5
- 2.Se8#
- 1...Se7
- 2.Be5#
- 2.Bxe7#
- 1...Sxb6!
- threat
- 1.Sd8?
- threat
- 2.Kc4#
- 2.Ke4#
- 2.Sc4#
- 2.Sf7#
- 1...Qxc6
- 2.Sf7#
- 1...dxc6
- 2.Kc4#
- 2.Ke4#
- 1...Ra5
- 2.Sc4#
- 2.Sf7#
- 1...Se7
- 2.Sc4#
- 2.Sf7#
- 2.Be5#
- 2.Bxe7#
- 1...Sxb6!
- threat
- 1.Rc5?
- threat
- 2.Kc3#
- 2.Kc4#
- 2.Sc4#
- 1...Qxc6
- 2.Sc4#
- 1...dxc6
- 2.Kc3#
- 2.Kc4#
- 1...dxe6
- 2.Kc4#
- 2.Sc4#
- 1...Se7
- 2.Sc4#
- 1...Sxb6!
- threat
- 1.Re1?
- threat
- 2.Qg3#
- 1...dxc6
- 2.Kc4#
- 1...dxe6
- 2.Ke3#
- 2.Ke4#
- 1...Ra5!
- threat
- 1.Re2?
- threat
- 2.Qg3#
- 1...dxc6
- 2.Kc4#
- 1...dxe6
- 2.Ke3#
- 2.Ke4#
- 1...Ra5!
- threat
- 1.Re4?
- threat
- 2.Ke3#
- 2.Qg3#
- 1...Qxc6
- 2.Qg3#
- 1...Sxb6
- 2.Qg3#
- 1...dxc6
- 2.Ke3#
- 2.Kc4#
- 1...dxe6
- 2.Ke3#
- 1...Se7
- 2.Qg3#
- 1...Ra5!
- threat
- 1.Qe4?
- threat
- 2.Sc4#
- 2.Qd5#
- 2.Qf4#
- 2.Qe5#
- 1...Qxc6
- 2.Qf4#
- 2.Qe5#
- 1...Sxb6
- 2.Qf4#
- 2.Qe5#
- 1...dxe6
- 2.Sc4#
- 2.Qe5#
- 2.Qxe6#
- 1...Ra5
- 2.Sc4#
- 1...Se7
- 2.Sc4#
- 2.Qf4#
- 2.Qe5#
- 1...dxc6!
- threat
- 1.Qb5?
- threat
- 2.Sc4#
- 2.Qb4#
- 2.Qc5#
- 2.Qd5#
- 2.Qe5#
- 1...Qxc6
- 2.Qe5#
- 1...Sxb6
- 2.Qb4#
- 2.Qc5#
- 2.Qe5#
- 1...dxe6
- 2.Sc4#
- 2.Qb4#
- 2.Qc5#
- 2.Qe5#
- 1...Ra5
- 2.Sc4#
- 1...Se7
- 2.Sc4#
- 2.Qb4#
- 2.Qc5#
- 2.Qe5#
- 1...dxc6!
- threat
- 1.Qd2?
- threat
- 2.Qh2#
- 1...dxc6
- 2.Kc4#
- 1...dxe6
- 2.Ke4#
- 1...Ra5!
- threat
- 1.Sg5?
- Keys
- 1.Qh7!
- threat
- 2.Qh2#
- 1...dxc6
- 2.Sc4#
- 1...dxe6
- 2.Be5#
- 1...Ra5
- 2.Qxd7#
- threat
- 1.Qh7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- P(d);SBLOCK,XP(G)::QAR(C)+K(E)
- P(d);SBLOCK,XS(H)::QAR(C)+K(E)
- Tries
- Try
- S(H);
- Threat
- DUALS(2)
- Vars
- Q(e);XP(G)::S(H)
- R(c);::S(H)
- Refutation
- S(f);XP(F)
- Try
- S(H);
- Threat
- DUALS(3)
- Vars
- Q(e);XP(G)::S(H)
- S(f);XP(F)::S(H)
- R(c);::S(H)
- Refutation
- R(c);XS(H)
- Try
- S(H);
- Threat
- DUALS(3)
- Vars
- R(c);::S(H)
- Refutation
- S(f);XP(F)
- Try
- S(H);
- Threat
- DUALS(4)
- Vars
- Q(e);XP(G)::S(H)
- Refutation
- S(f);XP(F)
- Try
- R(B);
- Threat
- DUALS(3)
- Vars
- Q(e);XP(G)::S(A)
- S(f);::S(A)
- Refutation
- S(f);XP(F)
- Try
- R(D);
- Threat
- QAB(C)
- Vars
- P(d);SBLOCK,XP(G)::QAR(C)+K(E)
- Refutation
- R(c);
- Try
- R(D);
- Threat
- QAB(C)
- Vars
- P(d);SBLOCK,XP(G)::QAR(C)+K(E)
- Refutation
- R(c);
- Try
- R(D);
- Threat
- DUALS(2)
- Vars
- Q(e);XP(G)::QAB(C)
- S(f);XP(F)::QAB(C)
- P(d);XS(H)::QAR(C)+K(E)
- S(f);::QAB(C)
- Refutation
- R(c);
- Try
- Q(C);
- Threat
- DUALS(4)
- Vars
- R(c);::S(A)
- Refutation
- P(d);XP(G)
- Try
- Q(C);
- Threat
- DUALS(5)
- Vars
- Q(e);XP(G)::QAB1(C)
- R(c);::S(A)
- Refutation
- P(d);XP(G)
- Try
- Q(C);
- Threat
- QAB(C)
- Vars
- P(d);SBLOCK,XP(G)::QAR(C)+K(E)
- P(d);SBLOCK,XS(H)::QAR(C)+K(E)
- Refutation
- R(c);
- Try
- Actual
- Q(C);
- Threat
- QAB(C)
- Vars
- P(d);SBLOCK,XP(G)::S(A)
- P(d);SBLOCK,XS(H)::B(I)
- R(c);N_GUARD::QAR1(C),XP(d)
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