MESON Chess Problem Database

Problem Display
PID: 105556 (r2BB2K/3p4/ppp2nPp/7k/4R3/Q1p1P3/5PP1/4b2r w - - 0 1)

Labsky, Viktor

Zpravodaj Kotva, 1967

r2BB2K/3p4/ppp2nPp/7k/4R3/Q1p1P3/5PP1/4b2r

#2

9 + 11

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sg4
      • 2.g7#
    • 1...Sd5
      • 2.g4#
      • 2.g7#
    • 1...Sh7
      • 2.g4#
      • 2.gxh7#
      • 2.g7#
    • 1...Sg8
      • 2.g4#
      • 2.g7#
  • Tries
    • 1.Bxf6?
      • threat
        • 2.g4#
      • 1...Rg1
        • 2.Rh4#
      • 1...Rh4
        • 2.Rxh4#
      • 1...Rxe8+!
    • 1.Re5+?
      • 1...Kh4
        • 2.Qb4#
        • 2.Qa4#
      • 1...Kg4!
  • Keys
    • 1.Qd6!
      • threat
        • 2.Qe5#
      • 1...Kg5
        • 2.Qe5#
      • 1...Sxe4
        • 2.Qd1#
      • 1...Sxe8
        • 2.g4#
      • 1...Sg4
        • 2.g7#
      • 1...Sh7
        • 2.Qd1#
        • 2.g4#
        • 2.gxh7#
        • 2.g7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • S(h);N_GUARD::B(H)+P(F)
  • Tries
    • Try
      • B(G);P_SPINB(H),XS(h)
      • Threat
        • P(B)
      • Vars
        • R(b);N_GUARD::R1(E)
        • R(b);N_GUARD::R1(E),XR(b)
      • Refutation
        • R(k);CHECK,XB(H)
    • Try
      • R(E);CHECK
      • Refutation
        • K(d);S_FLIGHT
  • Actual
    • Q(C);
    • Threat
      • QAR(C)
    • Vars
      • K(d);P-FLIGHT,P_SPINS(h)::QAR2(C)
      • S(h);N_GUARD,XR(E)::QAB(C)
      • S(h);N_GUARD,XB(H)::P(B)
      • S(h);N_GUARD::B(H)+P(F)
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