MESON Chess Problem Database

Problem Display
PID: 71142 (2N2k1N/7P/2B5/8/7p/KRB2q2/P3bRn1/4r1r1 w - - 0 1)

Peris Pardo, Julio

Chess, 1951

2N2k1N/7P/2B5/8/7p/KRB2q2/P3bRn1/4r1r1

#2

9 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Qf5
      • 2.Rxf5#
    • 1...Qf7
      • 2.Sg6#
      • 2.Rxf7#
  • Tries
    • 1.Rxf3+?
      • 1...Sf4
        • 2.Rxf4#
      • 1...Bxf3!
  • Keys
    • 1.Rb7!
      • threat
        • 2.Sg6#
      • 1...Bd3
        • 2.Bg7#
      • 1...Se3
        • 2.Bb4#
      • 1...Sf4
        • 2.Rf7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • Q(e);OGATE::R(B),XQ(e)
  • Tries
    • Try
      • R(B);CHECK,XQ(e)
      • Vars
        • S(d);N_GUARD,P_SPINS(d)::R(B),XS(d)
      • Refutation
        • B(c);XR(B)
  • Actual
    • R(D);P_SPINB(E)
    • Threat
      • S(I)
    • Vars
      • B(c);N_PINB(E)::B(E)
      • S(d);N_PINB(E)::B(E)
      • S(d);N_SPINQ(e),S_CUTQ(e)::R1(D)
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