MESON Chess Problem Database
Problem Display
PID: 154910 (8/pR1B2P1/2p3pQ/2r1p2b/2rp4/q1n5/2NNpk1K/7R w - - 0 1)
McWilliam, Robert C
Prize, BCCA, 1944
#2
8 + 12
| 15393 | McWilliam Scrapbook | 2015 |
SOLUTION
- SOUND
- Sets
- 1...Bf3
- 2.Qh4#
- 1...Bg4
- 2.Qh4#
- 1...d3
- 2.Qe3#
- 1...Bf3
- Tries
- 1.Rg1?
- threat
- 2.Rg2#
- 1...Bf3
- 2.Qh4#
- 1...e1S!
- threat
- 1.Qf4+?
- 1...Bf3
- 2.Qg3#
- 2.Qxf3#
- 2.Qh4#
- 1...exf4!
- 1...Bf3
- 1.Qg5?
- threat
- 2.Qh4#
- 2.Qg1#
- 2.Qg2#
- 2.Qg3#
- 1...e1Q
- 2.Qg2#
- 1...e1B
- 2.Qg2#
- 1...e1R
- 2.Qg2#
- 1...Qc1
- 2.Qh4#
- 2.Qg2#
- 2.Qg3#
- 1...Qa1
- 2.Qh4#
- 2.Qg2#
- 2.Qg3#
- 1...Bf3
- 2.Qh4#
- 2.Qg1#
- 2.Qg3#
- 1...Bg4
- 2.Qh4#
- 1...Sb1
- 2.Qg1#
- 2.Qg2#
- 1...Sd1
- 2.Qg1#
- 2.Qg2#
- 1...Sa2
- 2.Qg1#
- 2.Qg2#
- 1...Sa4
- 2.Qg1#
- 2.Qg2#
- 1...Se4
- 2.Qg1#
- 2.Qg2#
- 1...Sb5
- 2.Qg1#
- 2.Qg2#
- 1...Sd5
- 2.Qg1#
- 2.Qg2#
- 1...d3
- 2.Qe3#
- 2.Qg1#
- 2.Qg2#
- 2.Qg3#
- 1...e1S!
- threat
- 1.Qxh5?
- threat
- 2.Qf3#
- 2.Qh4#
- 1...e1Q
- 2.Qf3#
- 1...e1S
- 2.Rf1#
- 1...e1B
- 2.Rf1#
- 2.Qf3#
- 1...e1R
- 2.Qf3#
- 1...Sb1
- 2.Se4#
- 1...Sd1
- 2.Se4#
- 1...Sa2
- 2.Se4#
- 1...Sa4
- 2.Se4#
- 1...Se4
- 2.Sxe4#
- 1...Sb5
- 2.Se4#
- 1...Sd5
- 2.Se4#
- 1...d3
- 2.Qf3#
- 1...e4
- 2.Qh4#
- 1...g5
- 2.Qf3#
- 2.Qf7#
- 1...gxh5!
- threat
- 1.Rg1?
- Keys
- 1.Bg4!
- threat
- 2.Rf7#
- 1...Bxg4
- 2.Qh4#
- 1...e1S
- 2.Rf1#
- 1...Sb1
- 2.Se4#
- 1...Sd1
- 2.Se4#
- 1...Sa2
- 2.Se4#
- 1...Sa4
- 2.Se4#
- 1...Se4
- 2.Sxe4#
- 1...Sb5
- 2.Se4#
- 1...Sd5
- 2.Se4#
- 1...d3
- 2.Qe3#
- 1...e4
- 2.Qf4#
- 1...g5
- 2.Qf6#
- threat
- 1.Bg4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 10
- REMOVED MATES = 1
- Sets
- B(i);OGATE::QAB(E)
- P(f);N_GUARD::QAB1(E)
- Tries
- Try
- R(A);
- Threat
- R1(A)
- Vars
- B(i);OGATE::QAB(E)
- Refutation
- P(a);
- Try
- Q(E);CHECK
- Refutation
- P(h);XQ(E)
- Try
- Q(E);
- Threat
- DUALS(4)
- Vars
- P(a);::QAR1(E)
- B(i);::QAB(E)
- Refutation
- P(a);
- Try
- Q(E);XB(i)
- Threat
- DUALS(2)
- Vars
- P(a);::QAR1(E)
- P(a);N_GUARD::R1(A)
- S(d);N_GUARD::S(C)
- S(d);N_GUARD::S(C),XS(d)
- P(f);::QAR1(E)
- P(h);::QAB(E)
- Refutation
- P(k);XQ(E)
- Try
- Actual
- B(G);
- Threat
- R(F)
- Vars
- B(i);OGATE,XB(G)::QAB(E)
- P(a);N_GUARD::R1(A)
- S(d);N_GUARD::S(C)
- S(d);N_GUARD::S(C),XS(d)
- P(f);N_GUARD::QAB1(E)
- P(h);N_GUARD::QAR2(E)
- P(k);OGATE::QAR(E)
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