MESON Chess Problem Database

Problem Display
PID: 168398 (1Q6/2R3p1/3np1B1/KR1pk2N/3n4/8/8/B7 w - - 0 1)

Petite, Efren

Il Due Mosse, 1955

1Q6/2R3p1/3np1B1/KR1pk2N/3n4/8/8/B7

#2

7 + 6

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Sc4+
      • 2.Rxc4#
    • 1...Sb7+
      • 2.Rcxb7#
    • 1...Sf7
      • 2.Rxf7#
    • 1...Sc8
      • 2.Rxc8#
  • Tries
    • 1.Rxd5+?
      • 1...exd5
        • 2.Re7#
      • 1...Kxd5!
  • Keys
    • 1.Rc3!
      • threat
        • 2.Re3#
      • 1...Sb3+
        • 2.Rcxb3#
      • 1...Sc6+
        • 2.Rxc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • S(d);CHECK,OGATEB::QAB(G)+R(F),XS(d)
    • S(d);OGATEB::QAB(G)+R(F),XS(d)
  • Tries
    • Try
      • R(C);CHECK,XP(b)
      • Vars
        • P(e);SBLOCK,XR(C)::R(F)
      • Refutation
        • K(c);N_SPINS(a),P-FLIGHT,XR(C)
  • Actual
    • R(F);N_PINS(a),P_PINS(d)
    • Threat
      • R(F)
    • Vars
      • S(a);CHECK,OGATEB::B(A)+R(F),XS(a)
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