MESON Chess Problem Database
Problem Display
PID: 109250 (1nK3N1/4p1B1/2R3n1/2pkP2B/Qb2p3/pP6/P1N1P3/8 w - - 0 1)
Robinson, George A
Montreal Gazette, 1893
#2
11 + 8
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Be1
- 2.Se3#
- 1...Bc3
- 2.Se3#
- 1...Ba5
- 2.Se3#
- 1...Sf4
- 2.Sxe7#
- 1...Sh4
- 2.Sxe7#
- 1...Sxe5
- 2.Sxe7#
- 1...Sf8
- 2.Sxe7#
- 1...Sh8
- 2.Sxe7#
- 1...e3
- 2.Bf3#
- 1...c4
- 2.bxc4#
- 1...e6
- 2.Rd6#
- 1...Be1
- Tries
- 1.Kxb8?
- 1...Sxe5
- 2.Sxe7#
- 1...e3
- 2.Bf3#
- 1...Be1
- 2.Se3#
- 1...Bc3
- 2.Se3#
- 1...Ba5
- 2.Se3#
- 1...Sf4
- 2.Sxe7#
- 1...Sh4
- 2.Sxe7#
- 1...Sf8
- 2.Sxe7#
- 1...Sh8
- 2.Sxe7#
- 1...c4
- 2.bxc4#
- 1...e6
- 2.Rd6#
- 1...Bd2!
- 1...Sxe5
- 1.Bg4?
- threat
- 2.Be6#
- 1...e3
- 2.Bf3#
- 1...Sf4
- 2.Sxe7#
- 1...Sf8
- 2.Sxe7#
- 1...e6
- 2.Bxe6#
- 2.Rd6#
- 1...Sxc6!
- threat
- 1.Bxg6?
- threat
- 2.Sxe7#
- 1...c4
- 2.bxc4#
- 1...e6
- 2.Se7#
- 2.Rd6#
- 1...Sxc6!
- threat
- 1.Ra6?
- 1...Sxe5
- 2.Sxe7#
- 1...Sxa6
- 2.Qd7#
- 1...Sc6
- 2.Qxc6#
- 1...e3
- 2.Bf3#
- 1...Be1
- 2.Se3#
- 2.Qc4#
- 1...Bd2
- 2.Qc4#
- 1...Bc3
- 2.Se3#
- 2.Qc4#
- 1...Ba5
- 2.Se3#
- 2.Qc4#
- 1...Sf4
- 2.Sxe7#
- 1...Sh4
- 2.Sxe7#
- 1...Sf8
- 2.Sxe7#
- 1...Sh8
- 2.Sxe7#
- 1...Sd7
- 2.Qc6#
- 2.Qxd7#
- 1...e6
- 2.Rd6#
- 1...c4!
- 1...Sxe5
- 1.Rb6?
- 1...Sxe5
- 2.Sxe7#
- 1...Sc6
- 2.Qxc6#
- 1...e3
- 2.Bf3#
- 1...Be1
- 2.Se3#
- 2.Qc4#
- 1...Bd2
- 2.Qc4#
- 1...Bc3
- 2.Se3#
- 2.Qc4#
- 1...Ba5
- 2.Se3#
- 2.Qc4#
- 1...Sf4
- 2.Sxe7#
- 1...Sh4
- 2.Sxe7#
- 1...Sf8
- 2.Sxe7#
- 1...Sh8
- 2.Sxe7#
- 1...Sa6
- 2.Qc6#
- 2.Qd7#
- 1...Sd7
- 2.Qc6#
- 2.Qxd7#
- 2.Qa8#
- 1...e6
- 2.Rd6#
- 1...c4!
- 1...Sxe5
- 1.Rxg6?
- threat
- 2.Sxe7#
- 1...e3
- 2.Bf3#
- 1...Sc6
- 2.Qxc6#
- 1...e6
- 2.Se7#
- 1...c4!
- threat
- 1.Qa8?
- threat
- 2.Rd6#
- 1...Sxe5
- 2.Sxe7#
- 1...c4
- 2.bxc4#
- 1...Sxc6!
- threat
- 1.Kxb8?
- Keys
- 1.Qa7!
- 1...Kxc6
- 2.Qb7#
- 1...Sxe5
- 2.Sxe7#
- 1...Sxc6
- 2.Qd7#
- 1...e3
- 2.Bf3#
- 1...Sa6
- 2.Qd7#
- 1...Be1
- 2.Qxc5#
- 1...Bd2
- 2.Qxc5#
- 1...Bc3
- 2.Qxc5#
- 1...Ba5
- 2.Qxc5#
- 1...Sf4
- 2.Sxe7#
- 1...Sh4
- 2.Sxe7#
- 1...Sf8
- 2.Sxe7#
- 1...Sh8
- 2.Sxe7#
- 1...Sd7
- 2.Qxd7#
- 1...c4
- 2.Sxb4#
- 1...e6
- 2.Rd6#
- 1...Kxc6
- 1.Qa7!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 4
- ADDED MATES = 5
- REMOVED MATES = 0
- Sets
- B(b);::S(B)
- S(f);N_GUARD::S(K),XP(g)
- S(f);N_GUARD,XP(F)::S(K),XP(g)
- P(c);OGATEB::B(G)
- P(d);OGATE::P(D),XP(d)
- P(g);N_GUARD::R1(H)
- Tries
- Try
- K(J);P-FLIGHT,XS(h)
- Vars
- S(f);N_GUARD,XP(F)::S(K),XP(g)
- P(c);OGATEB::B(G)
- B(b);::S(B)
- S(f);N_GUARD::S(K),XP(g)
- P(d);OGATE::P(D),XP(d)
- P(g);N_GUARD::R1(H)
- Refutation
- B(b);
- Try
- B(G);
- Threat
- B(G)
- Vars
- P(c);OGATEB::B(G)
- S(f);N_GUARD::S(K),XP(g)
- Refutation
- S(h);XR(H)
- Try
- B(G);XS(f)
- Threat
- S(K),XP(g)
- Vars
- P(d);OGATE::P(D),XP(d)
- Refutation
- S(h);XR(H)
- Try
- R(H);
- Vars
- S(f);N_GUARD,XP(F)::S(K),XP(g)
- S(h);N_GUARD,XR(H)::QAR2(E)
- S(h);N_GUARD::QAB1(E),XS(h)
- P(c);OGATEB::B(G)
- B(b);OGATE::QAB1(E)
- S(f);N_GUARD::S(K),XP(g)
- P(g);N_GUARD::R1(H)
- Refutation
- P(d);
- Try
- R(H);
- Vars
- S(f);N_GUARD,XP(F)::S(K),XP(g)
- S(h);N_GUARD::QAB1(E),XS(h)
- P(c);OGATEB::B(G)
- B(b);OGATE::QAB1(E)
- S(f);N_GUARD::S(K),XP(g)
- P(g);N_GUARD::R1(H)
- Refutation
- P(d);
- Try
- R(H);XS(f)
- Threat
- S(K),XP(g)
- Vars
- P(c);OGATEB::B(G)
- S(h);N_GUARD::QAB1(E),XS(h)
- P(g);::S(K)
- Refutation
- P(d);
- Try
- Q(E);
- Threat
- QAB(E)+R(H),DCHECK
- Vars
- S(f);N_GUARD,XP(F)::S(K),XP(g)
- P(d);OGATE::P(D),XP(d)
- Refutation
- S(h);P_SPINS(h),XR(H)
- Try
- Actual
- Q(E);
- Vars
- K(e);OGATEB,S_FLIGHT,XR(H)::QAB1(E)
- S(f);N_GUARD,XP(F)::S(K),XP(g)
- S(h);N_GUARD,XR(H)::QAR2(E)
- P(c);OGATEB::B(G)
- S(h);N_GUARD::QAR2(E)
- B(b);N_GUARD::QAR1(E),XP(d)
- S(f);N_GUARD::S(K),XP(g)
- S(h);N_GUARD::QAR2(E),XS(h)
- P(d);N_GUARD::S(B),XB(b)
- P(g);N_GUARD::R1(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).