MESON Chess Problem Database

Problem Display
PID: 178766 (8/8/8/8/kpQpN1K1/8/8/8 w - - 0 1)

Feuille de Chou

Springaren, 1986

8/8/8/8/kpQpN1K1/8/8/8

#2

3 + 3

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Sd2?
      • threat
        • 2.Qa6#
      • 1...Ka3
        • 2.Qb3#
      • 1...Ka5!
    • 1.Sc3+?
      • 1...Ka3
        • 2.Qa2#
      • 1...Ka5
        • 2.Qb5#
      • 1...dxc3!
    • 1.Sd6?
      • threat
        • 2.Qa2#
      • 1...Ka5
        • 2.Qb5#
      • 1...Ka3!
  • Keys
    • 1.Sc5+!
      • 1...Ka3
        • 2.Qb3#
      • 1...Ka5
        • 2.Qa6#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(B);
      • Threat
        • QAR2(A)
      • Vars
        • K(a);N_SPINP(b),P-FLIGHT::QAR1(A)
      • Refutation
        • K(a);N_SPINP(b),P-FLIGHT
    • Try
      • S(B);CHECK
      • Vars
        • K(a);N_SPINP(b),P-FLIGHT::QAR1(A)
      • Refutation
        • P(c);XS(B)
    • Try
      • S(B);
      • Threat
        • QAR2(A)
      • Vars
        • K(a);N_SPINP(b),P-FLIGHT::QAR1(A)
      • Refutation
        • K(a);N_SPINP(b),P-FLIGHT
  • Actual
    • S(B);CHECK
    • Vars
      • K(a);N_SPINP(b),P-FLIGHT::QAR1(A)
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