MESON Chess Problem Database
Problem Display
PID: 18845 (8/1K5p/N2b2n1/2Nkp1QR/1R4n1/6B1/3p4/3r4 w - - 0 1)
Chandler, Guy Wills
Davis, NA St J
The Problemist, 1958
#2
7 + 8
SOLUTION
- SOUND
- Sets
- 1...Ra1
- 2.Qxd2#
- 1...Rb1
- 2.Qxd2#
- 1...Rc1
- 2.Qxd2#
- 1...Re1
- 2.Qxd2#
- 1...Rf1
- 2.Qxd2#
- 1...Rg1
- 2.Qxd2#
- 1...Rh1
- 2.Qxd2#
- 1...Sh4
- 2.Qg8#
- 1...Ra1
- Tries
- 1.Qxg4?
- threat
- 2.Rd4#
- 2.Qf3#
- 2.Qe6#
- 2.Qc4#
- 2.Qd4#
- 2.Qe4#
- 1...Bc7
- 2.Rd4#
- 2.Qe6#
- 2.Qd4#
- 1...Be7
- 2.Rd4#
- 2.Qe6#
- 2.Qd4#
- 1...Bb8
- 2.Rd4#
- 2.Qe6#
- 2.Qd4#
- 1...Bf8
- 2.Rd4#
- 2.Qe6#
- 2.Qd4#
- 1...Rb1
- 2.Qf3#
- 2.Qe6#
- 2.Qc4#
- 2.Qd4#
- 2.Qe4#
- 1...Rc1
- 2.Rd4#
- 2.Qf3#
- 2.Qe6#
- 2.Qd4#
- 2.Qe4#
- 1...Re1
- 2.Rd4#
- 2.Qe6#
- 2.Qc4#
- 2.Qd4#
- 1...Rf1
- 2.Rd4#
- 2.Qe6#
- 2.Qc4#
- 2.Qd4#
- 2.Qe4#
- 1...Sf4
- 2.Qf3#
- 1...Sh4
- 2.Rd4#
- 2.Qe6#
- 2.Qc4#
- 2.Qd4#
- 2.Qe4#
- 2.Qg8#
- 1...Sf8
- 2.Rd4#
- 2.Qf3#
- 2.Qc4#
- 2.Qd4#
- 2.Qe4#
- 1...Bxc5!
- threat
- 1.Qf5?
- threat
- 2.Qd3#
- 2.Qe4#
- 2.Qe6#
- 2.Qf3#
- 2.Qf7#
- 1...Bc7
- 2.Qd3#
- 2.Qe6#
- 1...Be7
- 2.Qd3#
- 2.Qe6#
- 1...Bb8
- 2.Qd3#
- 2.Qe6#
- 1...Bf8
- 2.Qd3#
- 2.Qe6#
- 1...Re1
- 2.Qd3#
- 2.Qe6#
- 2.Qf7#
- 1...Rf1
- 2.Qd3#
- 2.Qe4#
- 2.Qe6#
- 1...Sf2
- 2.Qe6#
- 2.Qf7#
- 1...Sh2
- 2.Qd3#
- 2.Qe4#
- 2.Qe6#
- 2.Qf7#
- 1...Sf6
- 2.Qd3#
- 2.Qe6#
- 1...Sh6
- 2.Qd3#
- 2.Qe4#
- 2.Qe6#
- 2.Qf3#
- 1...Sf4
- 2.Qe4#
- 1...Sh4
- 2.Qd3#
- 2.Qe4#
- 2.Qe6#
- 2.Qf7#
- 1...Sf8
- 2.Qd3#
- 2.Qe4#
- 2.Qf3#
- 1...Sh8
- 2.Qd3#
- 2.Qe4#
- 2.Qe6#
- 2.Qf3#
- 1...Bxc5!
- threat
- 1.Qxg6?
- threat
- 2.Qd3#
- 2.Qe4#
- 2.Qf7#
- 2.Qe6#
- 2.Qg8#
- 1...Bxc5
- 2.Sc7#
- 2.Qc6#
- 1...Re1
- 2.Qd3#
- 2.Qf7#
- 2.Qe6#
- 2.Qg8#
- 1...Rf1
- 2.Qd3#
- 2.Qe4#
- 2.Qe6#
- 1...Bc7
- 2.Qd3#
- 2.Qc6#
- 2.Qe6#
- 1...Be7
- 2.Qd3#
- 2.Qc6#
- 2.Qe6#
- 1...Bb8
- 2.Qd3#
- 2.Qc6#
- 2.Qe6#
- 1...Bf8
- 2.Qd3#
- 2.Qc6#
- 2.Qe6#
- 1...Sf2
- 2.Qf7#
- 2.Qe6#
- 2.Qg8#
- 1...Sf6
- 2.Qd3#
- 2.Qf7#
- 1...Sh6
- 2.Qd3#
- 2.Qe4#
- 2.Qe6#
- 1...hxg6!
- threat
- 1.Qxg4?
- Keys
- 1.Bxe5!
- threat
- 2.Rd4#
- 1...Bxc5
- 2.Sc7#
- 1...Bxe5
- 2.Qd8#
- 1...S4xe5
- 2.Qg2#
- 1...S6xe5
- 2.Qg8#
- 1...Rb1
- 2.Qxd2#
- threat
- 1.Bxe5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 7
- Sets
- R(a);N_GUARD::QAR(D),XP(b)
- R(a);N_GUARD,P_PINR(B)::QAR(D),XP(b)
- S(g);OGATE::QAB(D)
- Tries
- Try
- Q(D);XS(c)
- Threat
- DUALS(6)
- Vars
- S(g);::QAB(D)
- Refutation
- B(f);XS(C)
- Try
- Q(D);
- Threat
- DUALS(5)
- Vars
- S(g);::QAB1(D)
- Refutation
- B(f);XS(C)
- Try
- Q(D);XS(g)
- Threat
- DUALS(5)
- Refutation
- P(h);XQ(D)
- Try
- Actual
- B(A);XP(e)
- Threat
- R1(B)
- Vars
- B(f);N_GUARD,SBLOCK,XS(C)::S(F)
- B(f);OGATEB,P_SPINB(f),XB(A)::QAR(D)
- S(c);OGATE,P_SPINS(c),XB(A)::QAB(D)
- S(g);OGATE,P_SPINS(g),XB(A)::QAB(D)
- R(a);N_GUARD,P_PINR(B)::QAR(D),XP(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).