MESON Chess Problem Database

Problem Display
PID: 27662 (6K1/3B4/1pR1N3/1krP4/1b6/8/2Q5/1R6 w - - 0 1)

Lebeck, Donald

Mate in Two!! (Lebeck), 1992

6K1/3B4/1pR1N3/1krP4/1b6/8/2Q5/1R6

#2

7 + 4

SOLUTION

  • SOUND
  • Tries
    • 1.Sxc5?
      • 1...Ka5
        • 2.Qa4#
      • 1...bxc5!
    • 1.Qxc5+?
      • 1...Ka4
        • 2.Qxb4#
      • 1...Ka6
        • 2.Qxb6#
      • 1...bxc5!
  • Keys
    • 1.Qa2!
      • threat
        • 2.Sd4#
        • 2.Sc7#
        • 2.Rxc5#
      • 1...Rxd5
        • 2.Sc7#
        • 2.Rc5#
        • 2.Rd6#
      • 1...Rxc6
        • 2.Bxc6#
      • 1...Rc1
        • 2.Sd4#
        • 2.Sc7#
        • 2.Rcxc1#
        • 2.Rc2#
        • 2.Rc3#
        • 2.Rc4#
        • 2.Rc5#
      • 1...Rc2
        • 2.Sd4#
        • 2.Sc7#
        • 2.Rxc2#
        • 2.Rc3#
        • 2.Rc4#
        • 2.Rc5#
      • 1...Rc3
        • 2.Sd4#
        • 2.Sc7#
        • 2.Rxc3#
        • 2.Rc4#
        • 2.Rc5#
      • 1...Rc4
        • 2.Sc7#
        • 2.Rxc4#
        • 2.Rc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(E);XR(c)
      • Vars
        • K(b);N_SPINB(a),P-FLIGHT::QAR1(B)
      • Refutation
        • P(d);XS(E)
    • Try
      • Q(B);CHECK,XR(c)
      • Vars
        • K(b);N_SPINB(a),S_FLIGHT::QAR1(B),XB(a)
        • K(b);N_SPINB(a),P_SPINP(d),S_FLIGHT::QAR1(B),XP(d)
      • Refutation
        • P(d);XQ(B)
  • Actual
    • Q(B);
    • Threat
      • DUALS(3)
    • Vars
      • R(c);OGATE,P_SPINR(c),XR(D)::B(F),XR(c)
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