MESON Chess Problem Database

Problem Display
PID: 44113 (1b3BB1/3p4/N1r5/3Pk1p1/1p4K1/1P4N1/7Q/8 w - - 0 1)

Hanshew, John K

Source?, 0000

1b3BB1/3p4/N1r5/3Pk1p1/1p4K1/1P4N1/7Q/8

#2

8 + 6

4803 Chess Problems by John K Hanshew 1874

SOLUTION

  • SOUND
  • Sets
    • 1...Rc1
      • 2.Qh8#
    • 1...Rc2
      • 2.Qh8#
    • 1...Rc3
      • 2.Qh8#
    • 1...Rc5
      • 2.Qh8#
    • 1...Rxa6
      • 2.Qb2#
    • 1...Rb6
      • 2.Qb2#
    • 1...Rd6
      • 2.Qb2#
    • 1...Rf6
      • 2.Qb2#
    • 1...Rg6
      • 2.Qb2#
    • 1...Rh6
      • 2.Qb2#
    • 1...Rc7
      • 2.Qh8#
    • 1...Rc8
      • 2.Qh8#
    • 1...Bd6
      • 2.Bg7#
      • 2.Qh8#
    • 1...d6
      • 2.Bg7#
      • 2.Qh8#
  • Tries
    • 1.Sf5+?
      • 1...Ke4
        • 2.Qe2#
      • 1...Kf6!
    • 1.Bg7+?
      • 1...Kd6
        • 2.Sf5#
      • 1...Rf6!
  • Keys
    • 1.Bd6+!
      • 1...Kd4
        • 2.Qd2#
      • 1...Kxd6
        • 2.Sf5#
      • 1...Kf6
        • 2.Qh6#
      • 1...Rxd6
        • 2.Qb2#
      • 1...Bxd6
        • 2.Qh8#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 11
  • Sets
    • R(d);N_GUARD::QAB(A)
    • R(d);N_GUARD,XS(F)::QAB(A)
    • R(d);N_GUARD,SBLOCK::QAB(A)
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR2(A)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • B(G);CHECK
      • Vars
        • K(b);S_FLIGHT::QAB(A)+S(C),DCHECK
      • Refutation
        • R(d);P_SPINR(d)
  • Actual
    • B(G);CHECK
    • Vars
      • K(b);S_FLIGHT::QAR2(A)
      • K(b);S_FLIGHT,XB(G)::QAB(A)+S(C),DCHECK
      • R(d);SBLOCK,XB(G)::QAB(A)
      • B(f);SBLOCK,XB(G)::QAB(A)
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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).