MESON Chess Problem Database
Problem Display
PID: 175491 (1N2R3/p2Pr1p1/1bRrkpP1/8/B1p1K3/4Qp2/8/8 w - - 0 1)
Marshall, Burney Means
Philadelphia Times, 1899
#2
8 + 9
| 6490 | yacpdb | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Rxe8
- 2.dxe8Q#
- 2.dxe8R#
- 1...Bxe3
- 2.d8S#
- 1...Bd4
- 2.d8S#
- 1...Bc5
- 2.d8S#
- 1...c3
- 2.Bb3#
- 1...Rxe8
- Tries
- 1.Qd2?
- threat
- 2.Rxd6#
- 2.Qd5#
- 2.Qxd6#
- 1...Rxc6
- 2.Qd5#
- 1...Rxe8
- 2.Qxd6#
- 2.dxe8Q#
- 2.dxe8R#
- 1...Bd4
- 2.d8S#
- 1...Bc5
- 2.Qd5#
- 2.d8S#
- 1...Bc7
- 2.Qd5#
- 1...f5+!
- threat
- 1.Qd4?
- threat
- 2.Rxd6#
- 2.Qxc4#
- 2.Qd5#
- 2.Qxd6#
- 1...Rxc6
- 2.Qd5#
- 1...Rxe8
- 2.Qxd6#
- 2.dxe8Q#
- 2.dxe8R#
- 1...Bxd4
- 2.d8S#
- 1...Bc5
- 2.Qxc4#
- 2.Qd5#
- 2.d8S#
- 1...Bc7
- 2.Qxc4#
- 2.Qd5#
- 1...c3
- 2.Bb3#
- 2.Rxd6#
- 2.Qc4#
- 2.Qd5#
- 2.Qxd6#
- 1...f5+!
- threat
- 1.Qf4?
- threat
- 2.Rxd6#
- 2.Qxd6#
- 2.Qf5#
- 1...f5+
- 2.Qxf5#
- 1...Rxe8
- 2.Qxd6#
- 2.dxe8Q#
- 2.dxe8R#
- 1...Bc5
- 2.Qf5#
- 2.d8S#
- 1...Bc7
- 2.Qf5#
- 1...Rxc6!
- threat
- 1.Qg5?
- threat
- 2.Qd5#
- 2.Qf5#
- 1...f5+
- 2.Qxf5#
- 1...Rxc6
- 2.Qd5#
- 1...Rxe8
- 2.dxe8Q#
- 2.dxe8R#
- 1...fxg5!
- threat
- 1.Qxb6?
- threat
- 2.Rxd6#
- 2.d8S#
- 1...Rxc6
- 2.Qxc6#
- 1...Rxe8
- 2.dxe8Q#
- 2.dxe8R#
- 1...axb6
- 2.d8S#
- 1...f5+!
- threat
- 1.Qd3?
- threat
- 2.Rxd6#
- 2.Qxc4#
- 2.Qd5#
- 2.Qxd6#
- 1...Rxc6
- 2.Qd5#
- 1...Rxe8
- 2.Qxd6#
- 2.dxe8Q#
- 2.dxe8R#
- 1...cxd3
- 2.Bb3#
- 1...Bd4
- 2.Qxc4#
- 2.d8S#
- 1...Bc5
- 2.Qxc4#
- 2.Qd5#
- 2.d8S#
- 1...Bc7
- 2.Qxc4#
- 2.Qd5#
- 1...c3
- 2.Bb3#
- 2.Rxd6#
- 2.Qc4#
- 2.Qd5#
- 2.Qxd6#
- 1...f5+!
- threat
- 1.Qxf3?
- threat
- 2.Qf5#
- 1...f5+
- 2.Qxf5#
- 1...Rxe8
- 2.dxe8Q#
- 2.dxe8R#
- 1...Rxc6!
- threat
- 1.Qd2?
- Keys
- 1.Qc5!
- threat
- 2.Rxd6#
- 2.Qxd6#
- 2.Qxc4#
- 2.Qd5#
- 2.Qf5#
- 1...f5+
- 2.Qxf5#
- 1...Rxc6
- 2.Rxe7#
- 2.Qxe7#
- 2.Qd5#
- 2.Qxc6#
- 1...Rxe8
- 2.Qxd6#
- 2.dxe8Q#
- 2.dxe8R#
- 1...Bxc5
- 2.d8S#
- 1...Bc7
- 2.Qxc4#
- 2.Qd5#
- 2.Qf5#
- 1...c3
- 2.Bb3#
- 2.Rxd6#
- 2.Qxd6#
- 2.Qc4#
- 2.Qd5#
- 2.Qf5#
- threat
- 1.Qc5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 3
- Sets
- R(h);OGATE,XR(H)::PXR(h)=Q
- B(c);N_GUARD,XQ(A)::P=S
- B(c);N_GUARD::P=S
- P(b);OGATEB::B(B)
- Tries
- Try
- Q(A);
- Threat
- DUALS(3)
- Vars
- R(d);N_SPINR(d),P_SPINR(h),XR(D)::QAB1(A)
- B(c);N_GUARD::P=S
- B(c);::QAB1(A)
- Refutation
- P(f);CHECK
- Try
- Q(A);
- Threat
- DUALS(4)
- Vars
- R(d);N_SPINR(d),P_SPINR(h),XR(D)::QAB1(A)
- B(c);N_GUARD,XQ(A)::P=S
- Refutation
- P(f);CHECK
- Try
- Q(A);
- Threat
- DUALS(3)
- Vars
- P(f);CHECK::QAB1(A),XP(f)
- B(c);::QAB1(A)
- Refutation
- R(d);N_SPINR(d),P_SPINR(h),XR(D)
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- P(f);CHECK::QAB1(A),XP(f)
- R(d);N_SPINR(d),P_SPINR(h),XR(D)::QAB1(A)
- R(h);OGATE,XR(H)::PXR(h)=Q
- Refutation
- P(f);XQ(A)
- Try
- Q(A);XB(c)
- Threat
- DUALS(2)
- Vars
- R(d);OGATE,XR(D)::QAR2(A),XR(d)
- R(h);OGATE,XR(H)::PXR(h)=Q
- P(g);XQ(A)::P=S
- Refutation
- P(f);CHECK
- Try
- Q(A);
- Threat
- DUALS(4)
- Vars
- R(d);N_SPINR(d),P_SPINR(h),XR(D)::QAB1(A)
- P(b);OGATEB,XQ(A)::B(B)
- Refutation
- P(f);CHECK
- Try
- Q(A);XP(a)
- Threat
- QAB1(A)
- Vars
- P(f);CHECK::QAB1(A),XP(f)
- R(h);OGATE,XR(H)::PXR(h)=Q
- Refutation
- R(d);N_SPINR(d),P_SPINR(h),XR(D)
- Try
- Actual
- Q(A);
- Threat
- DUALS(5)
- Vars
- P(f);CHECK::QAB1(A),XP(f)
- B(c);N_GUARD,XQ(A)::P=S
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).