MESON Chess Problem Database
Problem Display
PID: 101252 (3R1r1n/3P2PR/P1k4r/KpBN1p2/p6q/2Q1P2p/2n5/7B w - - 0 1)
Stimson, James Frank (Ua Tane)
Good Companions, 1920
#2
11 + 10
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qf2
- 2.Ba3#
- 2.Bb4#
- 2.Be7#
- 2.Bxf8#
- 1...Qg3
- 2.Ba3#
- 2.Bb4#
- 2.Be7#
- 2.Bxf8#
- 1...Qg5
- 2.Ba3#
- 2.Bb4#
- 2.Be7#
- 2.Bxf8#
- 1...Qe7
- 2.Bxe7#
- 1...Qb4+
- 2.Bxb4#
- 1...Qh5
- 2.Ba3#
- 2.Bb4#
- 2.Be7#
- 2.Bxf8#
- 1...Rd6
- 2.Bd4#
- 1...Re8
- 2.dxe8Q#
- 2.dxe8B#
- 1...Sd4
- 2.Ba3#
- 2.Bb4#
- 2.Be7#
- 2.Bxf8#
- 1...f4
- 2.Ba3#
- 2.Bb4#
- 2.Be7#
- 2.Bxf8#
- 1...Qf2
- Tries
- 1.Sb6+?
- 1...Qe4
- 2.Ba3#
- 2.Bb4#
- 2.Be7#
- 2.Bxf8#
- 1...Kc7!
- 1...Qe4
- 1.Sf6+?
- 1...Qe4
- 2.Ba3#
- 2.Bb4#
- 2.Be7#
- 2.Bxf8#
- 1...Kc7!
- 1...Qe4
- 1.Sc7+?
- 1...Qe4
- 2.Ba3#
- 2.Bb4#
- 2.Be7#
- 2.Bxf8#
- 1...Kxc7!
- 1...Qe4
- 1.Rc8+?
- 1...Rxc8
- 2.dxc8Q#
- 1...Kxd7!
- 1...Rxc8
- 1.gxf8Q?
- threat
- 2.Bd4#
- 2.Rc8#
- 1...Qxd8+
- 2.Bb6#
- 1...Qb4+
- 2.Bxb4#
- 1...Rxh7
- 2.Bd4#
- 2.Qd6#
- 1...Sxe3
- 2.Rc8#
- 1...Qc4
- 2.Rc8#
- 1...Qe1
- 2.Rc8#
- 1...Qg3
- 2.Ba3#
- 2.Bb4#
- 2.Bd4#
- 2.Bb6#
- 2.Bd6#
- 2.Ba7#
- 2.Be7#
- 1...Qe7
- 2.Bxe7#
- 1...Qd4
- 2.Bxd4#
- 2.Rc8#
- 1...Qf4
- 2.Bd4#
- 1...Sa3
- 2.Rc8#
- 1...Sd4
- 2.Ba3#
- 2.Bb4#
- 2.Bxd4#
- 2.Bb6#
- 2.Bd6#
- 2.Ba7#
- 2.Be7#
- 2.Rc8#
- 1...Sf7
- 2.Bd4#
- 1...b4
- 2.Rc8#
- 1...Qe4!
- threat
- 1.gxf8B?
- threat
- 2.Bd4#
- 2.Rc8#
- 1...Qxd8+
- 2.Bb6#
- 1...Qb4+
- 2.Bxb4#
- 1...Rxh7
- 2.Bd4#
- 1...Sxe3
- 2.Rc8#
- 1...Qc4
- 2.Rc8#
- 1...Qe1
- 2.Rc8#
- 1...Qg3
- 2.Ba3#
- 2.Bb4#
- 2.Bd4#
- 2.Bb6#
- 2.Bcd6#
- 2.Ba7#
- 2.Bce7#
- 1...Qe7
- 2.Bcxe7#
- 1...Qd4
- 2.Bxd4#
- 2.Rc8#
- 1...Qf4
- 2.Bd4#
- 1...Sa3
- 2.Rc8#
- 1...Sd4
- 2.Ba3#
- 2.Bb4#
- 2.Bxd4#
- 2.Bb6#
- 2.Bcd6#
- 2.Ba7#
- 2.Bce7#
- 2.Rc8#
- 1...Sf7
- 2.Bd4#
- 1...b4
- 2.Rc8#
- 1...Qe4!
- threat
- 1.Sb6+?
- Keys
- 1.Qe5!
- threat
- 2.Sb4#
- 2.Sf4#
- 2.Se7#
- 2.Qc7#
- 1...Qe1+
- 2.Sb4#
- 1...Qxd8+
- 2.Sb6#
- 1...Qb4+
- 2.Sxb4#
- 1...Kxc5
- 2.Sb6#
- 1...Rxd8
- 2.Qc7#
- 1...Sxe3
- 2.Sb4#
- 2.Se7#
- 2.Qc7#
- 1...Qc4
- 2.Sb4#
- 2.Se7#
- 2.Qc7#
- 1...Qf2
- 2.Sb4#
- 2.Se7#
- 2.Qc7#
- 1...Qg3
- 2.Sb4#
- 2.Se7#
- 1...Qg5
- 2.Sb4#
- 2.Se7#
- 2.Qc7#
- 1...Qe7
- 2.Sc3#
- 2.Sb4#
- 2.Sf4#
- 2.Sb6#
- 2.Sf6#
- 2.Sc7#
- 2.Sxe7#
- 2.Qc7#
- 1...Qd4
- 2.Sb4#
- 2.Se7#
- 2.Qc7#
- 1...Qe4
- 2.Se7#
- 1...Qf4
- 2.Sb4#
- 2.Sxf4#
- 2.Se7#
- 1...Qg4
- 2.Sb4#
- 2.Se7#
- 2.Qc7#
- 1...Qh5
- 2.Sb4#
- 2.Se7#
- 2.Qc7#
- 1...Rd6
- 2.Qxd6#
- 1...Rg6
- 2.Sb4#
- 2.Se7#
- 2.Qc7#
- 1...Se1
- 2.Sb4#
- 2.Se7#
- 2.Qc7#
- 1...Sb4
- 2.Sxb4#
- 2.Se7#
- 2.Qc7#
- 1...Sd4
- 2.Sb4#
- 2.Se7#
- 2.Qc7#
- 1...b4
- 2.Sxb4#
- 2.Sf4#
- 2.Se7#
- 2.Qc7#
- 1...f4
- 2.Sb4#
- 2.Sxf4#
- 2.Se7#
- 2.Qc7#
- threat
- 1.Qe5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 5
- REMOVED MATES = 1
- Sets
- Q(d);N_GUARD::QAR(B)+B(E),XQ(d)
- Q(d);CHECK,N_GUARD::QAR(B)+B(E),XQ(d)
- R(h);SBLOCK::QAR(B)+B(E)
- R(i);OGATE::PXR(i)=Q
- Tries
- Try
- S(F);CHECK
- Refutation
- K(g);P-FLIGHT
- Try
- S(F);CHECK
- Refutation
- K(g);P-FLIGHT
- Try
- S(F);CHECK
- Refutation
- K(g);P-FLIGHT,XS(F)
- Try
- R(K);CHECK
- Vars
- R(i);OGATE,XR(K)::PXR(i)=Q
- Refutation
- K(g);S_FLIGHT,XP(H)
- Try
- P(I);XR(i)
- Threat
- DUALS(2)
- Vars
- Q(d);CHECK,N_GUARD,XR(K)::QAR(B)+B(E)
- Q(d);CHECK,N_GUARD::QAR(B)+B(E),XQ(d)
- S(a);XP(C)::R(K)
- Q(d);::R(K)
- Q(d);P_PINQ(B)::R(K)
- Q(d);N_GUARD::QAR(B)+B(E),XQ(d)
- Q(d);::QAR(B)+B(E)
- S(a);::R(K)
- S(j);::QAR(B)+B(E)
- P(e);::R(K)
- Refutation
- Q(d);
- Try
- P(I);XR(i)
- Threat
- DUALS(2)
- Vars
- Q(d);CHECK,N_GUARD,XR(K)::QAR(B)+B(E)
- Q(d);CHECK,N_GUARD::QAR(B)+B(E),XQ(d)
- R(h);XR(J)::QAR(B)+B(E)
- S(a);XP(C)::R(K)
- Q(d);::R(K)
- Q(d);P_PINQ(B)::R(K)
- Q(d);N_GUARD::QAR(B)+B(E),XQ(d)
- Q(d);::QAR(B)+B(E)
- S(a);::R(K)
- S(j);::QAR(B)+B(E)
- P(e);::R(K)
- Refutation
- Q(d);
- Try
- Actual
- Q(B);
- Threat
- DUALS(4)
- Vars
- Q(d);CHECK::B(A)+S(F),DCHECK
- Q(d);CHECK,N_GUARD,XR(K)::B(A)+S(F)
- Q(d);CHECK::B(A)+S(F),DCHECK,XQ(d)
- K(g);P-FLIGHT,XB(E)::QAR(B)+S(F)
- R(i);XR(K)::QAR1(B)
- Q(d);::S(F)
- R(h);N_GUARD::QAR1(B),XR(h)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
CSS/Javascript (jQuery, Bootstrap & DataTables).