MESON Chess Problem Database

Problem Display
PID: 272782 (8/3prB2/2p5/3p1p1R/1B1kP3/8/2PN1P2/K2Q4 w - - 0 1)

Umnov, Evgeny Ivanovich

The Problemist, 1930

8/3prB2/2p5/3p1p1R/1B1kP3/8/2PN1P2/K2Q4

#2

9 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...dxe4
      • 2.Sf3#
      • 2.Sc4#
  • Tries
    • 1.Bc5+?
      • 1...Kc3
        • 2.Rh3#
      • 1...Ke5
        • 2.Rxf5#
      • 1...Kxc5!
  • Keys
    • 1.c3+!
      • 1...Kd3
        • 2.Rh3#
      • 1...Ke5
        • 2.Rxf5#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(F);CHECK
      • Vars
        • K(a);N_GUARD,S_FLIGHT::R(H)
        • K(a);N_GUARD,P_SPINP(c),S_FLIGHT::R1(H),XP(c)
      • Refutation
        • K(a);S_FLIGHT,XB(F)
  • Actual
    • P(C);CHECK
    • Vars
      • K(a);N_GUARD,P-FLIGHT::R(H)
      • K(a);N_GUARD,P_SPINP(c),S_FLIGHT::R1(H),XP(c)
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