MESON Chess Problem Database
Problem Display
PID: 737 (3r4/2R4p/3n4/3Bp3/1p1k4/1p6/qr2p1QK/B1NNR3 w - - 0 1)
Ellerman, Arnoldo
British Chess Magazine, 1947
#2
8 + 10
SOLUTION
- SOUND
- Sets
- 1...Qa4
- 2.Bxb2#
- 1...Qa5
- 2.Bxb2#
- 1...Qa6
- 2.Bxb2#
- 1...Qa7
- 2.Bxb2#
- 1...Qa8
- 2.Bxb2#
- 1...Sc4
- 2.Rxc4#
- 2.Qe4#
- 1...Se4
- 2.Qxe4#
- 1...Sb5
- 2.Rc4#
- 2.Qe4#
- 1...Sf5
- 2.Rc4#
- 2.Qe4#
- 1...Sb7
- 2.Rc4#
- 2.Qe4#
- 1...Sf7
- 2.Rc4#
- 2.Qe4#
- 1...Sc8
- 2.Rc4#
- 2.Qe4#
- 1...Se8
- 2.Rc4#
- 2.Qe4#
- 1...exd1S
- 2.Qd2#
- 1...exd1B
- 2.Qd2#
- 1...Qa4
- Tries
- 1.Sxb3+?
- 1...Kd3
- 2.Qf3#
- 2.Qh3#
- 2.Qg3#
- 1...Qxb3!
- 1...Kd3
- 1.Bb7?
- threat
- 2.Qd5#
- 2.Qg1#
- 2.Qf2#
- 1...exd1Q
- 2.Qf2#
- 1...exd1S
- 2.Qd2#
- 1...exd1B
- 2.Qd2#
- 2.Qf2#
- 1...exd1R
- 2.Qf2#
- 1...e4
- 2.Qg7#
- 1...Qa5
- 2.Bxb2#
- 2.Qg1#
- 2.Qf2#
- 1...Rf8
- 2.Qd5#
- 1...Rg8
- 2.Qd5#
- 2.Qf2#
- 1...Sc4
- 2.Qe4#
- 1...Se4
- 2.Qxe4#
- 1...Sb5
- 2.Qe4#
- 2.Qg1#
- 2.Qf2#
- 1...Sf5
- 2.Qe4#
- 1...Sf7
- 2.Qe4#
- 2.Qg1#
- 2.Qf2#
- 1...Sc8
- 2.Qe4#
- 2.Qg1#
- 2.Qf2#
- 1...Se8
- 2.Qe4#
- 2.Qg1#
- 2.Qf2#
- 1...Sxb7!
- threat
- 1.Bf7?
- threat
- 2.Qd5#
- 1...exd1Q
- 2.Qf2#
- 1...exd1S
- 2.Qd2#
- 1...exd1B
- 2.Qd2#
- 2.Qf2#
- 1...exd1R
- 2.Qf2#
- 1...e4
- 2.Qg7#
- 1...Qa5
- 2.Bxb2#
- 1...Qa8
- 2.Bxb2#
- 1...Sc4
- 2.Rxc4#
- 1...Se4
- 2.Rc4#
- 1...Sb5
- 2.Rc4#
- 1...Sf5
- 2.Rc4#
- 1...Sb7
- 2.Rc4#
- 1...Sc8
- 2.Rc4#
- 1...Se8
- 2.Rc4#
- 1...Sxf7!
- threat
- 1.Qg4+?
- 1...Kxd5
- 2.Se3#
- 1...Se4
- 2.Qxe4#
- 1...e4!
- 1...Kxd5
- 1.Sxb3+?
- Keys
- 1.Be6!
- threat
- 2.Qd5#
- 1...exd1Q
- 2.Qf2#
- 1...exd1S
- 2.Qd2#
- 1...exd1B
- 2.Qd2#
- 2.Qf2#
- 1...exd1R
- 2.Qf2#
- 1...e4
- 2.Qg7#
- 1...Qa5
- 2.Bxb2#
- 1...Qa8
- 2.Bxb2#
- 1...Sc4
- 2.Rxc4#
- 1...Se4
- 2.Rc4#
- 1...Sb5
- 2.Rc4#
- 1...Sf5
- 2.Rc4#
- 1...Sb7
- 2.Rc4#
- 1...Sf7
- 2.Rc4#
- 1...Sc8
- 2.Rc4#
- 1...Se8
- 2.Rc4#
- threat
- 1.Be6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 10
- REMOVED MATES = 4
- Sets
- Q(a);N_GUARD::B(A),XR(b)
- S(h);N_GUARD::QAR1(E),XS(h)
- P(c);OGATE,P_PINQ(E),XS(C)::QAR2(E)
- Tries
- Try
- S(B);CHECK,XP(d)
- Refutation
- Q(a);XS(B)
- Try
- B(G);
- Threat
- DUALS(3)
- Vars
- P(c);P_PINQ(E),XS(C)::QAB(E)
- P(c);OGATE,P_PINQ(E),XS(C)::QAR2(E)
- P(g);OGATEB::QAB(E)
- R(j);::QAR1(E)
- S(h);N_GUARD::QAR1(E)
- S(h);N_GUARD::QAR1(E),XS(h)
- Refutation
- S(h);XB(G)
- Try
- B(G);
- Threat
- QAR1(E)
- Vars
- P(c);P_PINQ(E),XS(C)::QAB(E)
- P(c);OGATE,P_PINQ(E),XS(C)::QAR2(E)
- P(g);OGATEB,SBLOCK::QAB(E)
- Q(a);N_GUARD::B(A),XR(b)
- S(h);N_GUARD::R1(H),XS(h)
- S(h);N_GUARD::R1(H)
- Refutation
- S(h);XB(G)
- Try
- Q(E);CHECK
- Vars
- K(f);N_SPINR(b),P-FLIGHT,XB(G)::S(C)
- S(h);N_GUARD,P_SPINS(h)::QAR1(E),XS(h)
- Refutation
- P(g);P_SPINP(g)
- Try
- Actual
- B(G);
- Threat
- QAR1(E)
- Vars
- P(c);P_PINQ(E),XS(C)::QAB(E)
- P(c);OGATE,P_PINQ(E),XS(C)::QAR2(E)
- P(g);OGATEB,SBLOCK::QAB(E)
- Q(a);N_GUARD::B(A),XR(b)
- S(h);N_GUARD::R1(H),XS(h)
- S(h);N_GUARD::R1(H)
Developed and maintained by Brian Stephenson.
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