MESON Chess Problem Database
Problem Display
PID: 175615 (8/K3B3/nNp2pB1/2R5/1p1kp3/N3pP2/2Ppb3/6qQ w - - 0 1)
McAllister, George W
Philadelphia Times, 1900
#2
9 + 10
| 6490 | yacpdb | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Qf2
- 2.Qa1#
- 1...Qh2
- 2.Qa1#
- 1...Qa1
- 2.Qxa1#
- 1...Qg2
- 2.Qa1#
- 1...Qg3
- 2.Qa1#
- 1...Qg4
- 2.Qa1#
- 1...Qg5
- 2.Qa1#
- 1...Qxg6
- 2.Qa1#
- 1...Sxc5
- 2.Bxf6#
- 1...f5
- 2.Qh8#
- 1...Qf2
- Tries
- 1.Sa4?
- threat
- 2.Bxf6#
- 1...Qxg6
- 2.Qa1#
- 1...Qh2
- 2.Qa1#
- 1...Qg3
- 2.Qa1#
- 1...Qg5
- 2.Qa1#
- 1...f5
- 2.Bf6#
- 2.Qh8#
- 1...Sxc5!
- threat
- 1.Sd7?
- threat
- 2.Bxf6#
- 1...Qxg6
- 2.Qa1#
- 1...Qh2
- 2.Qa1#
- 1...Qg3
- 2.Qa1#
- 1...Qg5
- 2.Qa1#
- 1...f5
- 2.Bf6#
- 2.Qh8#
- 1...Sxc5!
- threat
- 1.Rc4+?
- 1...Ke5
- 2.Rxe4#
- 1...Bxc4!
- 1...Ke5
- 1.Ra5?
- threat
- 2.Bxf6#
- 1...Kc3
- 2.Bxf6#
- 1...Qxg6
- 2.Qa1#
- 1...Qh2
- 2.Qa1#
- 1...Qg3
- 2.Qa1#
- 1...Qg5
- 2.Qa1#
- 1...f5
- 2.Bf6#
- 2.Qh8#
- 1...Bb5!
- threat
- 1.Rd5+?
- 1...Kc3
- 2.Sa4#
- 2.Bxf6#
- 1...cxd5!
- 1...Kc3
- 1.Rf5?
- threat
- 2.Bxf6#
- 1...Kc3
- 2.Bxf6#
- 1...Qxg6
- 2.Qa1#
- 1...Qh2
- 2.Qa1#
- 1...Qg3
- 2.Qa1#
- 1...Qg5
- 2.Qa1#
- 1...exf3!
- threat
- 1.Rh5?
- threat
- 2.Bxf6#
- 1...Kc3
- 2.Bxf6#
- 1...Qxg6
- 2.Qa1#
- 1...Qg5
- 2.Qa1#
- 1...Qh2
- 2.Qa1#
- 1...Qg3
- 2.Qa1#
- 1...f5!
- threat
- 1.Rxc6?
- threat
- 2.Bxf6#
- 1...Qxg6
- 2.Qa1#
- 1...Qh2
- 2.Qa1#
- 1...Qg3
- 2.Qa1#
- 1...Qg5
- 2.Qa1#
- 1...f5
- 2.Bf6#
- 2.Qh8#
- 1...Ke5!
- threat
- 1.Qh4?
- threat
- 2.Qxf6#
- 2.Qxe4#
- 1...Bxf3
- 2.Qxf6#
- 1...Sxc5
- 2.Bxf6#
- 2.Qxf6#
- 1...Bc4
- 2.Qxf6#
- 1...Qh2
- 2.Qxe4#
- 1...Qg3
- 2.Qxe4#
- 1...Qg4
- 2.Qxf6#
- 1...Qg5
- 2.Qxe4#
- 1...Bd3
- 2.Qxf6#
- 1...f5
- 2.Qf6#
- 2.Qh8#
- 1...Qxg6!
- threat
- 1.c3+?
- 1...Kd3
- 2.Bxe4#
- 1...bxc3!
- 1...Kd3
- 1.Sa4?
- Keys
- 1.Rg5!
- threat
- 2.Bxf6#
- 1...Kc3
- 2.Bxf6#
- 1...Qxg5
- 2.Qa1#
- 1...fxg5
- 2.Qh8#
- 1...f5
- 2.Qh8#
- 1...Qh2
- 2.Qa1#
- 1...Qg3
- 2.Qa1#
- threat
- 1.Rg5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 6
- Sets
- Q(a);OGATE::QAB(A)
- Q(a);OGATE::QAB(A),XQ(a)
- Q(a);OGATE,XB(G)::QAB(A)
- S(h);SBLOCK,XR(E)::B(I),XP(j)
- P(j);OGATEB::QAB(A)
- Tries
- Try
- S(F);
- Threat
- B(I),XP(j)
- Vars
- Q(a);OGATE,XB(G)::QAB(A)
- Q(a);OGATE::QAB(A)
- Refutation
- S(h);XR(E)
- Try
- S(F);
- Threat
- B(I),XP(j)
- Vars
- Q(a);OGATE,XB(G)::QAB(A)
- Q(a);OGATE::QAB(A)
- Refutation
- S(h);XR(E)
- Try
- R(E);CHECK
- Vars
- K(f);OGATE,S_FLIGHT::R1(E),XP(g)
- Refutation
- B(c);XR(E)
- Try
- R(E);
- Threat
- B(I),XP(j)
- Vars
- K(f);S_FLIGHT::B(I),XP(j)
- Q(a);OGATE,XB(G)::QAB(A)
- Q(a);OGATE::QAB(A)
- Refutation
- B(c);
- Try
- R(E);CHECK
- Refutation
- P(i);XR(E)
- Try
- R(E);
- Threat
- B(I),XP(j)
- Vars
- K(f);S_FLIGHT::B(I),XP(j)
- Q(a);OGATE,XB(G)::QAB(A)
- Q(a);OGATE::QAB(A)
- Refutation
- P(g);XP(D)
- Try
- R(E);
- Threat
- B(I),XP(j)
- Vars
- K(f);S_FLIGHT::B(I),XP(j)
- Q(a);OGATE,XB(G)::QAB(A)
- Q(a);OGATE::QAB(A)
- Refutation
- P(j);
- Try
- R(E);XP(i)
- Threat
- B(I),XP(j)
- Vars
- Q(a);OGATE,XB(G)::QAB(A)
- Q(a);OGATE::QAB(A)
- Refutation
- K(f);S_FLIGHT
- Try
- Q(A);P_PINP(g)
- Threat
- DUALS(2)
- Vars
- B(c);XP(D)::QAB(A),XP(j)
- B(c);::QAB(A),XP(j)
- Q(a);::QAR1(A),XP(g)
- Q(a);N_SPINP(g)::QAB(A),XP(j)
- Refutation
- Q(a);XB(G)
- Try
- P(B);CHECK
- Vars
- K(f);P-FLIGHT,P_SPINP(g)::B(G),XP(g)
- Refutation
- P(e);XP(B)
- Try
- Actual
- R(E);
- Threat
- B(I),XP(j)
- Vars
- K(f);S_FLIGHT::B(I),XP(j)
- Q(a);OGATE,XR(E)::QAB(A)
- P(j);OGATEB,XR(E)::QAB(A)
- P(j);OGATEB::QAB(A)
- Q(a);OGATE::QAB(A)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
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