MESON Chess Problem Database

Problem Display
PID: 147713 (K7/B3N3/4r2Q/pk1P4/pN4bR/p2R4/8/5B2 w - - 0 1)

Cristoffanini, Guido

64 Shakhmatnoe obozrenie, 1930

K7/B3N3/4r2Q/pk1P4/pN4bR/p2R4/8/5B2

#2

9 + 6

35 L'Italia Scacchistica 1930
14868 Pirnie Collection 2013

SOLUTION

  • SOUND
  • Tries
    • 1.Rb3+?
      • 1...Re2
        • 2.Qa6#
        • 2.Qc6#
      • 1...Be2!
    • 1.Rc3+?
      • 1...Re2
        • 2.Qb6#
      • 1...Be2
        • 2.Rc5#
      • 1...Kxb4!
    • 1.Re3+?
      • 1...Be2
        • 2.Bxe2#
      • 1...Kxb4!
    • 1.Rf3+?
      • 1...Kxb4
        • 2.Qd2#
      • 1...Re2!
    • 1.Rd4+?
      • 1...Re2
        • 2.Qa6#
        • 2.Qb6#
        • 2.Qc6#
      • 1...Be2!
  • Keys
    • 1.Sa6!
      • threat
        • 2.Rb3#
      • 1...Kc4
        • 2.Re3#
      • 1...Kxa6
        • 2.Rf3#
      • 1...Be2
        • 2.Sc7#
      • 1...Re2
        • 2.Qc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(B);CHECK
      • Refutation
        • B(c);P_SPINB(c)
    • Try
      • R(B);CHECK
      • Vars
        • R(f);OGATE,P_SPINR(f)::QAR1(F)
        • B(c);P_SPINB(c)::R1(B)
      • Refutation
        • K(e);P-FLIGHT,P_SPINB(c),XS(C)
    • Try
      • R(B);CHECK
      • Vars
        • B(c);N_GUARD,P_SPINB(c)::B(A),XB(c)
      • Refutation
        • K(e);P-FLIGHT,P_SPINB(c),XS(C)
    • Try
      • R(B);CHECK
      • Vars
        • K(e);P-FLIGHT,P_SPINB(c),XS(C)::QAB(F)
      • Refutation
        • R(f);P_SPINR(f)
    • Try
      • R(B);CHECK
      • Refutation
        • B(c);P_SPINB(c)
  • Actual
    • S(C);
    • Threat
      • B(A)+R(B),DCHECK
    • Vars
      • K(e);P_SPINB(c),S_FLIGHT::B(A)+R(B)
      • K(e);P_SPINR(f),S_FLIGHT,XS(C)::B(A)+R(B)
      • B(c);::S(C)
      • R(f);OGATE::QAB1(F)
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