MESON Chess Problem Database

Problem Display
PID: 83796 (K7/1Q1p4/3bRBB1/8/5pk1/5R2/5Pb1/3N4 w - - 0 1)

Degener, Udo

3rd HM., Wola Gulowska, 1992

K7/1Q1p4/3bRBB1/8/5pk1/5R2/5Pb1/3N4

#2

8 + 5

15345 Wola Gulowska Award 1992
6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Bh5+?
      • 1...Kf5
        • 2.Qe4#
      • 1...Kxh5!
    • 1.Ree3?
      • threat
        • 2.Qxd7#
      • 1...Bxf3
        • 2.Qxf3#
      • 1...fxe3
        • 2.Sxe3#
      • 1...Bc7!
    • 1.Qe4?
      • threat
        • 2.Se3#
        • 2.Rg3#
      • 1...Bc5
        • 2.Rg3#
        • 2.Qxf4#
      • 1...Bxf3!
    • 1.Qxd7?
      • threat
        • 2.Re3#
      • 1...Bxf3+
        • 2.Re4#
      • 1...Kxf3
        • 2.Bh5#
      • 1...Be5!
  • Keys
    • 1.Re4!
      • threat
        • 2.Rg3#
      • 1...Kxf3
        • 2.Bh5#
      • 1...Bxf3
        • 2.Qxd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(F);CHECK
      • Vars
        • K(c);P_SPINP(b),S_FLIGHT::QAB1(G)
      • Refutation
        • K(c);S_FLIGHT,XB(F)
    • Try
      • R(D);
      • Threat
        • QAB(G),XP(e)
      • Vars
        • B(a);OGATE,P_PINQ(G),XR(C)::QAB1(G),XB(a)
        • P(b);XR(D)::S(A),XP(b)
      • Refutation
        • B(d);
    • Try
      • Q(G);P_PINP(b)
      • Threat
        • DUALS(2)
      • Refutation
        • B(a);P_PINQ(G),XR(C)
    • Try
      • Q(G);P_SPINR(C),XP(e)
      • Threat
        • QAB(G)+R(D)
      • Vars
        • B(a);CHECK,SBLOCK,XR(C)::QAB(G)+R(D)
        • K(c);S_FLIGHT,XR(C)::B(F)
      • Refutation
        • B(d);
  • Actual
    • R(D);P_PINP(b)
    • Threat
      • R1(C)
    • Vars
      • K(c);N_SPINP(b),S_FLIGHT,XR(C)::B(F)
      • B(a);SBLOCK,XR(C)::QAB(G),XP(e)
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