MESON Chess Problem Database

Problem Display
PID: 18215 (4q3/r2ppn2/3P1b2/3kP3/2RN2br/B7/B7/KQ6 w - - 0 1)

Casa, Alex

1st Place, Match: France - Israel, 1954

4q3/r2ppn2/3P1b2/3kP3/2RN2br/B7/B7/KQ6

#2

8 + 9

3105 FIDE Album (1945-1955) 1964

SOLUTION

  • SOUND
  • Sets
    • 1...Bxe5
      • 2.Ra4#
  • Tries
    • 1.Sb5?
      • threat
        • 2.Rc5#
      • 1...Bxe5+
        • 2.Rc3#
      • 1...Kxe5
        • 2.Qe4#
      • 1...Ke6
        • 2.Rc5#
      • 1...Rxa3!
    • 1.Rb4+?
      • 1...Kc5
        • 2.Ra4#
        • 2.Qc2#
        • 2.Qc1#
      • 1...Kxe5!
  • Keys
    • 1.Se6!
      • threat
        • 2.Rc5#
      • 1...Bxe5+
        • 2.Rc3#
      • 1...Kxe5
        • 2.Qe4#
      • 1...Kxe6
        • 2.Rc5#
      • 1...Bxe6
        • 2.Qb5#
      • 1...Sxe5
        • 2.Sf4#
      • 1...dxe6
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • B(d);P_PINS(F),SBLOCK,XP(G)::B(C)+R(E)
  • Tries
    • Try
      • S(F);P_SPINP(G)
      • Threat
        • B(C)+R(E),DCHECK
      • Vars
        • B(d);CHECK,SBLOCK,XP(G)::B(C)+R(E)
        • K(c);P-FLIGHT,XP(G)::QAR1(B)
        • K(c);S_FLIGHT::B(C)+R(E)
      • Refutation
        • R(e);P_PINB(C),XB(D)
    • Try
      • R(E);CHECK
      • Refutation
        • K(c);P-FLIGHT,XP(G)
  • Actual
    • S(F);P_SPINP(G)
    • Threat
      • B(C)+R(E),DCHECK
    • Vars
      • B(d);CHECK,SBLOCK,XP(G)::B(C)+R(E)
      • K(c);P-FLIGHT,XP(G)::QAR1(B)
      • K(c);S_FLIGHT,XS(F)::B(C)+R(E)
      • B(a);SBLOCK,XS(F)::QAR2(B)
      • S(h);SBLOCK,XP(G)::S(F)
      • P(f);SBLOCK,XS(F)::QAB1(B)
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