MESON Chess Problem Database
Problem Display
PID: 214781 (2R3b1/p3Kp1P/P2p1PB1/1pNk4/1Pp2Pp1/1P2R3/3b4/Bn1Q2nq w - - 0 1)
Anonymous
Detroit Free Press, 1878
#2
13 + 12
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Qe4+
- 2.Bxe4#
- 1...Qh2
- 2.Be4#
- 1...Qh3
- 2.Be4#
- 1...Qh4
- 2.Be4#
- 1...Qh5
- 2.Be4#
- 1...Qh6
- 2.Be4#
- 1...Bxh7
- 2.Bxf7#
- 1...Sa3
- 2.Qxd2#
- 1...Sc3
- 2.Qxd2#
- 1...Se2
- 2.Qxh1#
- 1...Sf3
- 2.Be4#
- 1...Sh3
- 2.Qxh1#
- 1...cxb3
- 2.Qxb3#
- 1...c3
- 2.Rd3#
- 1...dxc5
- 2.Re5#
- 2.Rxc5#
- 1...fxg6
- 2.hxg8Q#
- 2.hxg8B#
- 1...Qe4+
- Tries
- 1.Re6?
- threat
- 2.Rxd6#
- 1...cxb3
- 2.Qxb3#
- 1...dxc5
- 2.Re5#
- 2.Rd6#
- 2.Rxc5#
- 2.Rd8#
- 1...Qe4
- 2.Bxe4#
- 1...fxe6!
- threat
- 1.Qc2?
- threat
- 2.Qf5#
- 1...Qe4+
- 2.Bxe4#
- 2.Qxe4#
- 1...cxb3
- 2.Rd3#
- 2.Qxb3#
- 2.Qd3#
- 1...fxg6
- 2.hxg8Q#
- 2.hxg8B#
- 1...Sc3
- 2.Qxd2#
- 1...c3
- 2.Rd3#
- 2.Qd3#
- 1...Qh5
- 2.Be4#
- 2.Qe4#
- 1...Sf3
- 2.Be4#
- 2.Qe4#
- 1...Bc3!
- threat
- 1.Qf3+?
- 1...Sxf3
- 2.Be4#
- 1...gxf3
- 2.Be4#
- 1...Qxf3!
- 1...Sxf3
- 1.Qxb1?
- threat
- 2.Qf5#
- 1...Qe4+
- 2.Bxe4#
- 2.Qxe4#
- 1...cxb3
- 2.Qd3#
- 2.Qxb3#
- 1...fxg6
- 2.hxg8Q#
- 2.hxg8B#
- 1...c3
- 2.Rd3#
- 2.Qd3#
- 1...Qh5
- 2.Be4#
- 2.Qe4#
- 1...Sf3
- 2.Be4#
- 2.Qe4#
- 1...Bc3!
- threat
- 1.bxc4+?
- 1...Kxc4
- 2.Qb3#
- 1...bxc4!
- 1...Kxc4
- 1.hxg8Q?
- threat
- 2.Bxf7#
- 2.Qxf7#
- 1...Qe4+
- 2.Bxe4#
- 1...Sc3
- 2.Qxd2#
- 1...c3
- 2.Rd3#
- 1...Qh5
- 2.Be4#
- 2.Qxf7#
- 1...Qh7!
- threat
- 1.hxg8B?
- threat
- 2.B6xf7#
- 2.B8xf7#
- 1...Qe4+
- 2.Bxe4#
- 1...Sc3
- 2.Qxd2#
- 1...c3
- 2.Rd3#
- 1...Qh5
- 2.Be4#
- 2.B8xf7#
- 1...Qh7!
- threat
- 1.Re6?
- Keys
- 1.Rh3!
- 1...Qe4+
- 2.Bxe4#
- 1...Qxh3
- 2.Be4#
- 1...Bxh7
- 2.Bxf7#
- 1...Sxh3
- 2.Qxh1#
- 1...cxb3
- 2.Qxb3#
- 1...gxh3
- 2.Qh5#
- 1...dxc5
- 2.Rxc5#
- 1...fxg6
- 2.hxg8Q#
- 2.hxg8B#
- 1...Sc3
- 2.Qxd2#
- 1...c3
- 2.Rd3#
- 1...Qg2
- 2.Rh5#
- 1...Qf3
- 2.Rh5#
- 1...Qh2
- 2.Be4#
- 1...Sa3
- 2.Qxd2#
- 1...Se2
- 2.Qxh1#
- 1...Sf3
- 2.Be4#
- 1...g3
- 2.Qh5#
- 1...Qe4+
- 1.Rh3!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 3
- Sets
- Q(c);CHECK,N_GUARD::B(J),XQ(c)
- Q(c);N_GUARD::B(J)
- Q(c);N_GUARD,P_PINP(I)::B(J)
- B(l);N_GUARD,XP(L)::B(J),XP(k)
- S(a);N_GUARD::QAR(B),XB(d)
- S(b);OGATE::QAB(B),XQ(c)
- S(b);S_CUTQ(c)::B(J)
- P(e);OGATE,XP(C)::QAB(B),XP(e)
- P(e);N_GUARD::R(D)
- P(k);XB(J)::PXB(l)=Q
- Tries
- Try
- R(D);
- Threat
- R1(D),XP(i)
- Vars
- P(e);OGATE,XP(C)::QAB(B),XP(e)
- Q(c);N_GUARD,P_PINR(D)::B(J),XQ(c)
- Refutation
- P(k);XR(D)
- Try
- Q(B);N_PINB(d)
- Threat
- QAR2(B)
- Vars
- P(k);XB(J)::PXB(l)=Q
- S(a);N_GUARD::QAR(B),XB(d)
- Refutation
- B(d);
- Try
- Q(B);CHECK,N_PINB(d)
- Vars
- S(b);XQ(B)::B(J)
- P(f);XQ(B)::B(J)
- Refutation
- Q(c);XQ(B)
- Try
- Q(B);N_PINB(d),XS(a)
- Threat
- QAR2(B)
- Vars
- P(k);XB(J)::PXB(l)=Q
- Refutation
- B(d);
- Try
- P(C);CHECK,XP(e)
- Vars
- K(h);N_SPINB(d),S_FLIGHT,XP(C)::QAB1(B)
- Refutation
- P(g);XP(C)
- Try
- P(L);P_PINP(k),XB(l)
- Threat
- DUALS(2)
- Vars
- Q(c);CHECK,N_GUARD::B(J),XQ(c)
- S(a);N_GUARD::QAR(B),XB(d)
- P(e);N_GUARD::R(D)
- Refutation
- Q(c);
- Try
- P(L);P_PINP(k),XB(l)
- Threat
- DUALS(2)
- Vars
- Q(c);CHECK,N_GUARD::B(J),XQ(c)
- S(a);N_GUARD::QAR(B),XB(d)
- P(e);N_GUARD::R(D)
- Refutation
- Q(c);
- Try
- Actual
- R(D);
- Vars
- Q(c);CHECK,N_GUARD::B(J),XQ(c)
- Q(c);N_GUARD,XR(D)::B(J)
- B(l);N_GUARD,XP(L)::B(J),XP(k)
- S(b);OGATE,XR(D)::QAB(B),XQ(c)
- P(e);OGATE,XP(C)::QAB(B),XP(e)
- P(f);OGATE,XR(D)::QAR(B)
- P(i);OGATE,XS(G)::R1(M),XP(i)
- P(k);XB(J)::PXB(l)=Q
- S(a);N_GUARD::QAR(B),XB(d)
- P(e);N_GUARD::R(D)
- Q(c);N_GUARD::R(D)
- Q(c);N_GUARD::B(J)
- S(b);OGATE::QAB(B),XQ(c)
- S(b);S_CUTQ(c)::B(J)
- P(f);OGATE::QAR(B)
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).