MESON Chess Problem Database
Problem Display
PID: 44863 (1n6/R5pP/8/1KN2p2/p2kPP2/1p4Q1/6pP/qNn3br w - - 0 1)
Murphy, F
Recomm., BCF 043. Ty., 1942-1943
#2
9 + 11
SOLUTION
- SOUND
- Sets
- 1...Qb2
- 2.Rxa4#
- 1...Qc3
- 2.Qxc3#
- 1...Qxb1
- 2.Rxa4#
- 1...Qa2
- 2.Qc3#
- 1...Qa3
- 2.Qc3#
- 1...Bf2
- 2.Qxf2#
- 1...Bxh2
- 2.Qf2#
- 1...Be3
- 2.Qxg7#
- 1...Sa2
- 2.Qd3#
- 1...Se2
- 2.Qd3#
- 1...Sd3
- 2.Qxd3#
- 1...Sa6
- 2.Rd7#
- 1...Sc6
- 2.Rd7#
- 1...Sd7
- 2.Rxd7#
- 1...b2
- 2.Qc3#
- 1...a3
- 2.Ra4#
- 1...g5
- 2.h8Q#
- 2.h8B#
- 1...g6
- 2.h8Q#
- 2.h8B#
- 1...Qb2
- Tries
- 1.Sd2?
- threat
- 2.Se6#
- 1...Be3
- 2.Qxg7#
- 1...Sd3
- 2.Qxd3#
- 1...fxe4!
- threat
- 1.Sc3?
- threat
- 2.Se6#
- 1...Be3
- 2.Qxg7#
- 1...Sd3
- 2.Se2#
- 2.Qxd3#
- 1...Qxc3!
- threat
- 1.Qf3?
- threat
- 2.Se6#
- 1...fxe4
- 2.Qxe4#
- 1...Be3!
- threat
- 1.h8Q?
- threat
- 2.Qhxg7#
- 1...Sd3
- 2.Qxd3#
- 1...Sc6
- 2.Rd7#
- 1...Sd7
- 2.Rxd7#
- 1...fxe4!
- threat
- 1.h8B?
- threat
- 2.Bxg7#
- 1...Sd3
- 2.Qxd3#
- 1...Sc6
- 2.Rd7#
- 1...Sd7
- 2.Rxd7#
- 1...fxe4!
- threat
- 1.Sd2?
- Keys
- 1.Qe1!
- 1...Qxb1
- 2.Rxa4#
- 1...Rxh2
- 2.Qxg1#
- 1...Bxh2
- 2.Qf2#
- 1...fxe4
- 2.Qxe4#
- 1...Se2
- 2.Qd2#
- 1...Qb2
- 2.Rxa4#
- 1...Qc3
- 2.Qxc3#
- 1...Qa2
- 2.Qc3#
- 1...Qa3
- 2.Qc3#
- 1...Bf2
- 2.Qxf2#
- 1...Be3
- 2.Qb4#
- 1...Sa2
- 2.Qd2#
- 1...Sd3
- 2.Se6#
- 1...Sa6
- 2.Rd7#
- 1...Sc6
- 2.Rd7#
- 1...Sd7
- 2.Rxd7#
- 1...b2
- 2.Qc3#
- 1...a3
- 2.Ra4#
- 1...g5
- 2.h8Q#
- 2.h8B#
- 1...g6
- 2.h8Q#
- 2.h8B#
- 1...Qxb1
- 1.Qe1!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 4
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- Q(a);N_GUARD::R(H),XP(g)
- Q(a);N_GUARD::QAB1(C),XQ(a)
- Q(a);N_GUARD,XS(A)::R(H),XP(g)
- Q(a);N_GUARD::QAB1(C)
- B(c);N_GUARD::QAB(C),XB(c)
- B(c);N_GUARD,XP(B)::QAB(C)
- B(c);SBLOCK::QAB(C),XP(j)
- S(b);N_GUARD::QAR1(C)
- S(b);N_GUARD::QAR1(C),XS(b)
- S(k);N_GUARD::R(H)
- S(k);N_GUARD::R(H),XS(k)
- P(f);S_CUTQ(a)::QAB1(C)
- P(g);S_CUTQ(a)::R(H)
- P(j);::P=Q
- Tries
- Try
- S(A);
- Threat
- S(G)
- Vars
- B(c);SBLOCK::QAB(C),XP(j)
- S(b);N_GUARD::QAR1(C),XS(b)
- Refutation
- P(i);XP(D)
- Try
- S(A);
- Threat
- S(G)
- Vars
- B(c);SBLOCK::QAB(C),XP(j)
- Refutation
- Q(a);XS(A)
- Try
- Q(C);
- Threat
- S(G)
- Vars
- P(i);OGATE,XP(D)::QAR1(C),XP(i)
- Refutation
- B(c);
- Try
- P(I);P_PINP(j)
- Threat
- QAB(I),XP(j)
- Vars
- S(b);N_GUARD::QAR1(C),XS(b)
- S(k);N_GUARD::R(H)
- S(k);N_GUARD::R(H),XS(k)
- Refutation
- P(i);XP(D)
- Try
- P(I);P_PINP(j)
- Threat
- B(I),XP(j)
- Vars
- S(b);N_GUARD::QAR1(C),XS(b)
- S(k);N_GUARD::R(H)
- S(k);N_GUARD::R(H),XS(k)
- Refutation
- P(i);XP(D)
- Try
- Actual
- Q(C);
- Vars
- Q(a);N_GUARD,XS(A)::R(H),XP(g)
- R(d);N_GUARD,XP(B)::QAB(C),XB(c)
- B(c);N_GUARD,XP(B)::QAB(C)
- P(i);OGATE,XP(D)::QAR1(C),XP(i)
- S(b);N_GUARD::QAR2(C)
- Q(a);N_GUARD::R(H),XP(g)
- Q(a);N_GUARD::QAB1(C),XQ(a)
- Q(a);N_GUARD::QAB1(C)
- B(c);N_GUARD::QAB(C),XB(c)
- B(c);SBLOCK::QAR2(C)
- S(b);SBLOCK::S(G)
- S(k);N_GUARD::R(H)
- S(k);N_GUARD::R(H),XS(k)
- P(f);S_CUTQ(a)::QAB1(C)
- P(g);S_CUTQ(a)::R(H)
- P(j);::P=Q
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