MESON Chess Problem Database

Problem Display
PID: 203704 (b7/8/B1p5/1r1N1p2/R4K2/3k2N1/R2P4/8 w - - 0 1)

Lipton, Michael

The Problemist, 2019

b7/8/B1p5/1r1N1p2/R4K2/3k2N1/R2P4/8

#2

7 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...cxd5
      • 2.Bxb5#
  • Tries
    • 1.Kf3?
      • threat
        • 2.Sf4#
      • 1...cxd5
        • 2.Bxb5#
      • 1...f4
        • 2.Sxf4#
      • 1...c5!
    • 1.Kxf5?
      • 1...cxd5
        • 2.Bxb5#
      • 1...c5
        • 2.Sf4#
      • 1...Bb7!
    • 1.Kg5?
      • threat
        • 2.Sf4#
      • 1...cxd5
        • 2.Bxb5#
      • 1...f4!
  • Keys
    • 1.Ke5!
      • threat
        • 2.Rd4#
      • 1...c5
        • 2.Sf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • P(d);N_GUARD,XS(F)::B(G),XR(b)
  • Tries
    • Try
      • K(E);P-FLIGHT
      • Threat
        • S(F)
      • Vars
        • P(d);N_GUARD,XS(F)::B(G),XR(b)
        • P(c);::S(F),XP(c)
      • Refutation
        • P(d);P_PINS(F)
    • Try
      • K(E);P-FLIGHT,P_SPINS(F),XP(c)
      • Vars
        • P(d);N_GUARD,XS(F)::B(G),XR(b)
        • P(d);N_PINS(F)::S(F)
      • Refutation
        • B(e);
    • Try
      • K(E);S_FLIGHT
      • Threat
        • S(F)
      • Vars
        • P(d);N_GUARD,XS(F)::B(G),XR(b)
      • Refutation
        • P(c);P_PINS(F)
  • Actual
    • K(E);P_SPINS(F),S_FLIGHT
    • Threat
      • R1(D)
    • Vars
      • P(d);N_PINS(F)::S(F)
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