MESON Chess Problem Database
Problem Display
PID: 141125 (6r1/4N3/1n2p2p/2q3NK/1PPk1BQ1/4R3/4B3/b7 w - - 0 1)
Dujardin, Paul
diagrammes, 1996
#2
9 + 7
SOLUTION
- SOUND
- Sets
- 1...Qxb4
- 2.Sxe6#
- 1...Qd6
- 2.Sf3#
- 1...Qxe7
- 2.Sf3#
- 1...Qxc4
- 2.Sf3#
- 1...Qa5
- 2.Sc6#
- 1...Qe5
- 2.Sc6#
- 1...Qf5
- 2.Sc6#
- 1...Qxg5+
- 2.Bxg5#
- 1...Qc6
- 2.Sxc6#
- 1...Qc7
- 2.Sf3#
- 2.Sxe6#
- 1...Qc8
- 2.Sf3#
- 1...Rxg5+
- 2.Bxg5#
- 1...Bc3
- 2.Re4#
- 1...Sxc4
- 2.Rd3#
- 1...Sd5
- 2.Sf3#
- 2.Sxe6#
- 1...e5
- 2.Sf3#
- 2.Se6#
- 2.Sf5#
- 1...hxg5
- 2.Bxg5#
- 1...Qxb4
- Tries
- 1.Sf5+?
- 1...exf5
- 2.Sf3#
- 2.Se6#
- 1...Qxf5!
- 1...exf5
- 1.Qf5?
- threat
- 2.Sf3#
- 2.Sxe6#
- 2.Qd3#
- 2.Qe4#
- 2.Qxc5#
- 1...Qxb4
- 2.Sf3#
- 2.Sxe6#
- 2.Sc6#
- 2.Qe5#
- 1...Qxe7
- 2.Sf3#
- 2.Qd3#
- 2.Qe4#
- 2.Qe5#
- 1...Qxc4
- 2.Sf3#
- 2.Qe4#
- 2.Qe5#
- 1...Qxf5
- 2.Sc6#
- 1...exf5
- 2.Sf3#
- 2.Se6#
- 1...hxg5
- 2.Qd3#
- 2.Qe4#
- 2.Qxc5#
- 1...Qd6
- 2.Sf3#
- 2.Qd3#
- 2.Qe4#
- 1...Qa5
- 2.Sf3#
- 2.Sxe6#
- 2.Sc6#
- 2.Qd3#
- 2.Qe4#
- 1...Qb5
- 2.Sf3#
- 2.Sxe6#
- 2.Qd3#
- 2.Qe4#
- 1...Qd5
- 2.Qd3#
- 1...Qe5
- 2.Sf3#
- 2.Sc6#
- 2.Qd3#
- 2.Qxe5#
- 1...Qc6
- 2.Sxc6#
- 2.Qd3#
- 2.Qe5#
- 1...Qc7
- 2.Sf3#
- 2.Sxe6#
- 2.Qd3#
- 2.Qe4#
- 1...Qc8
- 2.Sf3#
- 2.Qd3#
- 2.Qe4#
- 2.Qe5#
- 1...Rg6
- 2.Sf3#
- 2.Qd3#
- 2.Qe4#
- 2.Qxc5#
- 1...Rc8
- 2.Sf3#
- 2.Sxe6#
- 2.Qd3#
- 2.Qe4#
- 1...Sa4
- 2.Sf3#
- 2.Sxe6#
- 2.Qd3#
- 2.Qe4#
- 1...Sd5
- 2.Sf3#
- 2.Sxe6#
- 2.Qd3#
- 2.Qe4#
- 2.Qe5#
- 1...Sd7
- 2.Sf3#
- 2.Sxe6#
- 2.Qd3#
- 2.Qe4#
- 1...e5
- 2.Sf3#
- 2.Se6#
- 2.Qd3#
- 2.Qe4#
- 1...Rxg5+!
- threat
- 1.Sf5+?
- Keys
- 1.Bf1!
- threat
- 2.Qd1#
- 1...Qxg5+
- 2.Bxg5#
- 1...Rxg5+
- 2.Bxg5#
- 1...Qxb4
- 2.Sxe6#
- 1...Qxc4
- 2.Sf3#
- 1...Sxc4
- 2.Rd3#
- 1...Qf5
- 2.Sc6#
- 1...Bc3
- 2.Re4#
- threat
- 1.Bf1!
This is a version of 23816
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 7
- Sets
- Q(c);N_PINS(G),XP(C)::S(G),XP(e)
- Q(c);N_PINS(G)::S(G)
- Q(c);N_PINS(G),XS(I)::S(G)
- Q(c);N_PINS(G),XP(D)::S(G)
- Q(c);N_GUARD::S(I)
- Q(c);CHECK,OGATE,XS(G)::QAR(F)+B(E),XQ(c)
- Q(c);N_GUARD,N_PINS(G)::S(I),XQ(c)
- R(g);CHECK,OGATE,XS(G)::QAR(F)+B(E),XR(g)
- B(a);SBLOCK::R1(B)
- S(d);SBLOCK,XP(D)::R1(B)
- P(f);OGATE,XS(G)::QAR(F)+B(E),XP(f)
- Tries
- Try
- S(I);CHECK,N_SPINS(G)
- Refutation
- Q(c);P_PINS(G),XS(I)
- Try
- Q(F);N_SPINS(G)
- Threat
- DUALS(5)
- Vars
- Q(c);N_GUARD,P_PINS(G),XQ(F)::S(I)
- Q(c);::QAR1(F)
- Refutation
- R(g);CHECK,XS(G)
- Try
- Actual
- B(A);
- Threat
- QAR(F)
- Vars
- Q(c);CHECK,OGATE,XS(G)::QAR(F)+B(E),XQ(c)
- R(g);CHECK,OGATE,XS(G)::QAR(F)+B(E),XR(g)
- Q(c);N_PINS(G),XP(C)::S(G),XP(e)
- Q(c);N_PINS(G),XP(D)::S(G)
- S(d);SBLOCK,XP(D)::R1(B)
- Q(c);N_GUARD::S(I)
- B(a);SBLOCK::R1(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).