MESON Chess Problem Database

Problem Display
PID: 49634 (8/8/2p1R1P1/2p2Qq1/B1N1KN2/5P2/5p2/4kb1R w - - 0 1)

Rice, John Michael

Die Schwalbe, 1986

8/8/2p1R1P1/2p2Qq1/B1N1KN2/5P2/5p2/4kb1R

#2

9 + 6

5159 FIDE Album (1986-1988) (Annexe) 1996

SOLUTION

  • SOUND
  • Sets
    • 1...Qxf4+
      • 2.Kxf4#
    • 1...Qxf5+
      • 2.Kxf5#
  • Tries
    • 1.Ke5?
      • threat
        • 2.Kd6#
      • 1...Qxf4+
        • 2.Kxf4#
      • 1...Qf6+
        • 2.Kxf6#
      • 1...Qxf5+
        • 2.Kxf5#
      • 1...Qe7
        • 2.Qb1#
        • 2.Qe4#
      • 1...Qd8
        • 2.Qe4#
      • 1...Qg1
        • 2.Qb1#
      • 1...Qxg6!
    • 1.Sg2+?
      • 1...Qxg2
        • 2.Kf4#
      • 1...Ke2!
  • Keys
    • 1.Ke3!
      • threat
        • 2.Qb1#
      • 1...Qxf4+
        • 2.Kxf4#
      • 1...Qxf5
        • 2.Sg2#
      • 1...Qxg6
        • 2.Sd3#
      • 1...Qd8
        • 2.Sg2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • Q(e);CHECK,XS(F)::R(H)+K(E),XQ(e)
    • Q(e);CHECK,XQ(G)::R(H)+K(E),XQ(e)
  • Tries
    • Try
      • K(E);P-FLIGHT,P_SPINQ(G)
      • Threat
        • R(H)+K(E)
      • Vars
        • Q(e);CHECK,N_PINQ(G),XS(F)::R(H)+K(E),XQ(e)
        • Q(e);CHECK,N_PINQ(G)::R(H)+K(E),XQ(e)
        • Q(e);CHECK,XQ(G)::R(H)+K(E),XQ(e)
        • Q(e);N_PINQ(G)::QAR(G)
        • Q(e);N_PINQ(G),N_SPINB(b)::QAR(G)
      • Refutation
        • Q(e);N_PINQ(G),XP(I)
    • Try
      • S(F);CHECK
      • Vars
        • Q(e);P_PINP(B),XS(F)::R(H)+K(E)
      • Refutation
        • K(a);N_SPINB(b),P-FLIGHT
  • Actual
    • K(E);P-FLIGHT,P_SPINS(F)
    • Threat
      • QAR(G)
    • Vars
      • Q(e);CHECK,XS(F)::R(H)+K(E),XQ(e)
      • Q(e);N_PINS(F),XQ(G)::S(F)
      • Q(e);N_PINS(F),XP(I)::S(F)
      • Q(e);N_PINS(F)::S(F)
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