MESON Chess Problem Database

Problem Display
PID: 121857 (5b2/8/2p5/2BkpPp1/6P1/2KN4/2P5/3Q4 w - - 0 1)

de Godoy, Paulo

Caissa, 1981

5b2/8/2p5/2BkpPp1/6P1/2KN4/2P5/3Q4

#2

7 + 5

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Ke4
      • 2.Qh1#
  • Tries
    • 1.Se1+?
      • 1...Ke4
        • 2.Qf3#
      • 1...Kxc5!
    • 1.Sxe5+?
      • 1...Ke4
        • 2.Qd4#
      • 1...Kxe5
        • 2.Qd4#
      • 1...Kxc5!
  • Keys
    • 1.Kb4!
      • threat
        • 2.Sf2#
      • 1...Bxc5+
        • 2.Sxc5#
      • 1...Ke4
        • 2.Qh1#
      • 1...e4
        • 2.c4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::QAB(A)
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • K(a);S_FLIGHT::QAB1(A)
      • Refutation
        • K(a);P-FLIGHT,XB(F)
    • Try
      • S(D);CHECK,XP(b)
      • Vars
        • K(a);S_FLIGHT::QAR1(A)
        • K(a);P-FLIGHT,XS(D)::QAB1(A)
      • Refutation
        • K(a);P-FLIGHT,XB(F)
  • Actual
    • K(C);P_SPINB(F),S_FLIGHT
    • Threat
      • QAR(A)+S(D)
    • Vars
      • B(e);CHECK,XB(F)::QAR(A)+S(D),XB(e)
      • K(a);S_FLIGHT::QAB(A)
      • P(b);SBLOCK::P(B)
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