MESON Chess Problem Database
Problem Display
PID: 108473 (2n5/7Q/2Rp2N1/1pnkP3/1p1PN1K1/1P2p3/2R5/6BB w - - 0 1)
Jacobs, Charles Sumner
Montreal Gazette, 1894
#2
11 + 7
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Ke6
- 2.Sxc5#
- 2.Sg5#
- 2.Sf4#
- 1...Sb6
- 2.Rxd6#
- 1...Sa7
- 2.Rxd6#
- 1...Se7
- 2.Rxd6#
- 1...e2
- 2.Sxc5#
- 1...Ke6
- Tries
- 1.Sc3+?
- 1...Ke6
- 2.Sf4#
- 2.Sf8#
- 2.Bd5#
- 2.d5#
- 1...Kxd4!
- 1...Ke6
- 1.Sf6+?
- 1...Ke6
- 2.Sf4#
- 2.Sf8#
- 2.Bd5#
- 2.Qg8#
- 2.d5#
- 1...Kxd4!
- 1...Ke6
- 1.Se7+?
- 1...Ke6
- 2.Sxc5#
- 1...Sxe7
- 2.Rxd6#
- 1...Kxd4!
- 1...Ke6
- 1.Bxe3?
- threat
- 2.Sxc5#
- 1...Ke6
- 2.Sxc5#
- 2.Sg5#
- 2.Sf4#
- 1...Sxb3
- 2.Sc5#
- 2.Sg5#
- 2.Sf4#
- 2.Qg8#
- 2.Qf7#
- 1...Sxe4
- 2.Sf4#
- 2.Qg8#
- 2.Qf7#
- 1...dxe5
- 2.Sc3#
- 2.Sf6#
- 2.R2xc5#
- 1...Sd3
- 2.Sc5#
- 2.Sg5#
- 2.Qg8#
- 2.Qf7#
- 1...Sa4
- 2.Sc5#
- 2.Sg5#
- 2.Sf4#
- 2.Qg8#
- 2.Qf7#
- 1...Sa6
- 2.Sc5#
- 2.Sg5#
- 2.Sf4#
- 2.Qg8#
- 2.Qf7#
- 1...Se6
- 2.Sd2#
- 2.Sf2#
- 2.Sc3#
- 2.Sg3#
- 2.Sc5#
- 2.Sg5#
- 2.Sxd6#
- 2.Sf6#
- 1...Sb7
- 2.Sc5#
- 2.Sg5#
- 2.Sf4#
- 2.Qg8#
- 2.Qf7#
- 1...Sd7
- 2.Sc5#
- 2.Sg5#
- 2.Sf4#
- 2.Qg8#
- 2.Qf7#
- 1...Kxc6!
- threat
- 1.R6xc5+?
- 1...Kxd4
- 2.Rd2#
- 1...Ke6
- 2.Sg5#
- 2.Sf4#
- 2.Sf8#
- 2.d5#
- 1...dxc5!
- 1...Kxd4
- 1.Sc3+?
- Keys
- 1.Qa7!
- 1...Kxd4
- 2.Rd2#
- 1...Kxc6
- 2.Sxd6#
- 1...Ke6
- 2.Sxc5#
- 2.Sg5#
- 2.Sf4#
- 1...Sxb3
- 2.Sg5#
- 2.Sf4#
- 1...Sxe4
- 2.Sf4#
- 1...Sxa7
- 2.Rxd6#
- 1...dxe5
- 2.Qxc5#
- 1...Sd3
- 2.Sg5#
- 1...Sa4
- 2.Sg5#
- 2.Sf4#
- 1...Sa6
- 2.Sg5#
- 2.Sf4#
- 1...Se6
- 2.Sd2#
- 2.Sf2#
- 2.Sc3#
- 2.Sg3#
- 2.Sg5#
- 2.Sxd6#
- 2.Sf6#
- 1...Sb7
- 2.Sg5#
- 2.Sf4#
- 1...Sd7
- 2.Sg5#
- 2.Sf4#
- 1...Sb6
- 2.Rxd6#
- 1...Se7
- 2.Rxd6#
- 1...e2
- 2.Sxc5#
- 1...Kxd4
- 1.Qa7!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 0
- Sets
- S(g);N_GUARD::R1(I),XP(f)
- P(a);::B(B)+S(F),XS(d)
- Tries
- Try
- S(F);CHECK
- Refutation
- K(e);P-FLIGHT,P_SPINP(a),XP(E)
- Try
- S(F);CHECK
- Refutation
- K(e);P-FLIGHT,P_SPINP(a),XP(E)
- Try
- S(J);CHECK
- Vars
- K(e);P_SPINP(f),S_FLIGHT::S(F),XS(d)
- S(g);XS(J)::R1(I),XP(f)
- Refutation
- K(e);P-FLIGHT,P_SPINP(a),XP(E)
- Try
- B(A);XP(a)
- Threat
- B(B)+S(F),XS(d)
- Refutation
- K(e);P_SPINS(d),S_FLIGHT,XR(I)
- Try
- R(I);CHECK,XS(d)
- Vars
- K(e);P-FLIGHT,P_SPINP(a),XP(E)::R(C)
- Refutation
- P(f);XR(I)
- Try
- Actual
- Q(K);
- Vars
- K(e);OGATEB,P-FLIGHT,P_SPINP(a),P_SPINS(d),XP(E)::R(C)
- K(e);P_SPINS(d),S_FLIGHT,XR(I)::B(B)+S(F),XP(f)
- S(d);P_SPINS(d),XS(F)::S(J)
- S(g);N_GUARD,XQ(K)::R1(I),XP(f)
- P(f);N_GUARD,XP(H)::QAR1(K),XS(d)
- S(d);N_GUARD::B(B)+S(F)
- S(g);N_GUARD::R1(I),XP(f)
- P(a);::B(B)+S(F),XS(d)
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).