MESON Chess Problem Database

Problem Display
PID: 109338 (8/8/8/3p4/3R4/rBQK4/pBp1p3/Rbqkr3 w - - 0 1)

Schenkerik, Csaba

Gyorsszerzo verseny, 1986

8/8/8/3p4/3R4/rBQK4/pBp1p3/Rbqkr3

#2

6 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qxb2
      • 2.Qd2#
    • 1...Qd2+
      • 2.Qxd2#
    • 1...Qe3+
      • 2.Kxe3#
    • 1...Qf4
      • 2.Bxc2#
      • 2.Qxc2#
    • 1...Qg5
      • 2.Bxc2#
      • 2.Qxc2#
    • 1...Qh6
      • 2.Bxc2#
      • 2.Qxc2#
  • Tries
    • 1.Bxc1?
      • threat
        • 2.Qd2#
      • 1...Kxc1
        • 2.Qxc2#
      • 1...Rxb3!
  • Keys
    • 1.Qxc2+!
      • 1...Qxc2+
        • 2.Ke3#
      • 1...Bxc2+
        • 2.Kc3#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • Q(b);N_GUARD,P_SPINB(a),XB(B)::QAR1(D)
    • Q(b);CHECK,N_GUARD,P_SPINB(a)::QAR1(D),XQ(b)
    • Q(b);CHECK,P_SPINB(a)::R(F)+K(E),XQ(b)
  • Tries
    • Try
      • B(B);XQ(b)
      • Threat
        • QAR1(D)
      • Vars
        • K(c);P-FLIGHT,P_SPINB(a),XB(B)::QAR1(D),XP(f)
      • Refutation
        • R(h);N_SPINP(f),P_PINQ(D),XB(C)
  • Actual
    • Q(D);CHECK,P_SPINB(C),P_SPINQ(D),XP(f)
    • Vars
      • Q(b);CHECK,P_SPINB(a),P_SPINQ(b),XQ(D)::R(F)+K(E)
      • B(a);CHECK,P_SPINB(a),P_SPINQ(b),XQ(D)::R(F)+K(E)
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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).