MESON Chess Problem Database

Problem Display
PID: 257613 (1N2R1N1/2ppp3/2P1B1R1/4k3/1K2p3/4B3/8/8 w - - 0 1)

Nichtawitz, Alois

Troll, 2021

(First published on Wed Sep 1 2021)

1N2R1N1/2ppp3/2P1B1R1/4k3/1K2p3/4B3/8/8

#2

8 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Kd6
      • 2.Bf4#
    • 1...d6
      • 2.Sd7#
  • Tries
    • 1.Kc5?
      • threat
        • 2.Sxd7#
      • 1...dxc6
        • 2.Sxc6#
        • 2.Sd7#
      • 1...dxe6
        • 2.Rg5#
      • 1...d5
        • 2.Sd7#
      • 1...d6+!
    • 1.Sh6?
      • threat
        • 2.Sf7#
      • 1...Kd6
        • 2.Sf7#
        • 2.Bf4#
      • 1...dxe6!
  • Keys
    • 1.Rd8!
      • 1...Kd6
        • 2.Bf4#
      • 1...dxc6
        • 2.Sxc6#
      • 1...dxe6
        • 2.Rg5#
      • 1...d5
        • 2.Rxd5#
      • 1...d6
        • 2.Sd7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(b);N_GUARD,S_FLIGHT::B(A)
    • P(d);SBLOCK::S(F)
  • Tries
    • Try
      • K(B);S_FLIGHT
      • Threat
        • S(F),XP(d)
      • Vars
        • P(d);SBLOCK,XB(D)::R(E)
        • P(d);::S(F)
      • Refutation
        • P(d);CHECK
    • Try
      • S(H);
      • Threat
        • S(H)
      • Refutation
        • P(d);XB(D)
  • Actual
    • R(G);
    • Vars
      • K(b);N_GUARD,P_SPINP(d),S_FLIGHT::B(A)
      • P(d);XP(C)::S(F),XP(d)
      • P(d);SBLOCK,XB(D)::R(E)
      • P(d);OGATE::R1(G),XP(d)
      • P(d);SBLOCK::S(F)
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