MESON Chess Problem Database

Problem Display
PID: 84879 (4R3/6p1/B1pBK3/1Rb2N2/2N1k1p1/1b6/2p1nq2/5Q2 w - - 0 1)

Petite, Efren

Probleemblad 114. TT, 1963

4R3/6p1/B1pBK3/1Rb2N2/2N1k1p1/1b6/2p1nq2/5Q2

#2

8 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Kd7+?
      • 1...Kd3
        • 2.Rxb3#
      • 1...Kf3
        • 2.Sd2#
        • 2.Sh4#
      • 1...Kd5
        • 2.Sb6#
      • 1...Kxf5!
  • Keys
    • 1.Kf7+!
      • 1...Kd3
        • 2.Rxb3#
      • 1...Kf3
        • 2.Sh4#
      • 1...Kd5
        • 2.Sb6#
      • 1...Kxf5
        • 2.Rxc5#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(G);CHECK,N_SPINS(B),S_FLIGHT
      • Vars
        • K(e);P_SPINS(b),S_FLIGHT::R(C),XB(d)
        • K(e);P_SPINB(g),S_FLIGHT::S(B)
      • Refutation
        • K(e);P_SPINB(g),P_SPINQ(c),S_FLIGHT,XS(D)
  • Actual
    • K(G);CHECK,S_FLIGHT
    • Vars
      • K(e);P_SPINS(b),S_FLIGHT::R(C),XB(d)
      • K(e);P_SPINQ(c),S_FLIGHT::S(D)
      • K(e);N_PINS(B),P_PINS(D),P_SPINB(g),S_FLIGHT::S(B)
      • K(e);P_SPINB(g),P_SPINQ(c),S_FLIGHT,XS(D)::R(C),XB(g)
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