MESON Chess Problem Database

Problem Display
PID: 263170 (1B3R2/4p1p1/2p2p2/5R2/5P2/2p1Pk1B/K1Q2p2/3n1N1n w - - 0 1)

Labai, Zoltan

Comm., SuperProblem, 2021

1B3R2/4p1p1/2p2p2/5R2/5P2/2p1Pk1B/K1Q2p2/3n1N1n

#2

9 + 9

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...e5
      • 2.fxe5#
    • 1...g5
      • 2.fxg5#
  • Tries
    • 1.Re5?
      • threat
        • 2.Qxd1#
      • 1...Sxe3
        • 2.Rxe3#
      • 1...fxe5
        • 2.fxe5#
      • 1...Sg3
        • 2.Sh2#
      • 1...Sb2!
  • Keys
    • 1.Rg5!
      • threat
        • 2.Bg2#
      • 1...Sxe3
        • 2.Sh2#
      • 1...fxg5
        • 2.fxg5#
      • 1...Sg3
        • 2.Rxg3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • P(h);OGATE::R(G)+P(F),XP(h)
    • P(i);OGATE::R(G)+P(F),XP(i)
  • Tries
    • Try
      • R(G);
      • Threat
        • QAB(C),XS(a)
      • Vars
        • S(a);OGATE,XP(D)::R1(G),XS(a)
        • P(g);OGATE,XR(G)::R(I)+P(F),XP(g)
        • S(b);SBLOCK::S(A)
      • Refutation
        • S(a);
  • Actual
    • R(G);
    • Threat
      • B(E)
    • Vars
      • S(a);SBLOCK,XP(D)::S(A)
      • P(g);OGATE,XR(G)::R(I)+P(F),XP(g)
      • S(b);N_GUARD::R1(G),XS(b)
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