MESON Chess Problem Database

Problem Display
PID: 243035 (8/3bNNr1/1ppPk1Pn/q5P1/4Bp2/1R2BK2/Q7/b1r1R3 w - - 0 1)

Grabowski, Kazimierz

Tidskrift for Schack, 1916

8/3bNNr1/1ppPk1Pn/q5P1/4Bp2/1R2BK2/Q7/b1r1R3

#2

11 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Qxe1
      • 2.Rc3#
    • 1...Qc3
      • 2.Rxc3#
    • 1...c5
      • 2.Bd5#
  • Tries
    • 1.Rb5+?
      • 1...Rc4
        • 2.Qxc4#
      • 1...Qxa2!
  • Keys
    • 1.Bc5!
      • threat
        • 2.Bd5#
        • 2.Bf5#
      • 1...Qc3+
        • 2.Rxc3#
      • 1...Rc3+
        • 2.Bd3#
      • 1...Qxe1
        • 2.Rc3#
      • 1...Rxe1
        • 2.Ra3#
      • 1...Rxg6
        • 2.Bd5#
      • 1...Bc8
        • 2.Bf5#
      • 1...Be8
        • 2.Bf5#
      • 1...Be5
        • 2.Sd8#
      • 1...Sf5
        • 2.Bd5#
        • 2.Bxf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 1
  • Sets
    • Q(d);N_GUARD,XR(A)::QAB(B)+R(C)
    • Q(d);N_GUARD,P_PINB(D)::QAB(B)+R(C),XQ(d)
    • P(f);N_GUARD,S_CUTQ(d)::B(F)
  • Tries
    • Try
      • R(C);CHECK
      • Vars
        • R(b);N_GUARD,P_SPINR(b)::QAB(B),XR(b)
      • Refutation
        • Q(d);XQ(B)
  • Actual
    • B(D);
    • Threat
      • DUALS(2)
    • Vars
      • Q(d);CHECK,N_GUARD::QAB(B)+R(C),XQ(d)
      • R(b);CHECK,N_GUARD,S_CUTB(a),S_CUTQ(d)::R(A)+B(F)
      • Q(d);N_GUARD,XR(A)::QAB(B)+R(C)
      • R(b);N_GUARD,XR(A)::QAB(B)+R(C)
      • R(j);XP(I)::R(A)+B(F),DCHECK
      • B(i);::R(A)+B(F),DCHECK
      • B(a);SBLOCK::S(K)
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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).