MESON Chess Problem Database

Problem Display
PID: 109841 (7Q/3np2N/1p1pPqR1/3pk1BK/3p1N2/3P2PB/7b/8 w - - 0 1)

Bakcsi, Gyorgy

1st Prize, Suomen Shakki, 1981

7Q/3np2N/1p1pPqR1/3pk1BK/3p1N2/3P2PB/7b/8

#2

10 + 9

117 Suomen Shakki 1983
6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Bxf6+?
      • 1...exf6
        • 2.Rg5#
      • 1...Sxf6+!
    • 1.Rxf6?
      • threat
        • 2.Sg6#
        • 2.Rf5#
      • 1...exf6
        • 2.Sg6#
      • 1...Sf8
        • 2.Rf5#
        • 2.Rg6#
        • 2.Rh6#
        • 2.Rf7#
        • 2.Rxf8#
      • 1...Sxf6+!
  • Keys
    • 1.Qa8!
      • threat
        • 2.Qxd5#
      • 1...Qxg5+
        • 2.Rxg5#
      • 1...Qxg6+
        • 2.Sxg6#
      • 1...Qxf4
        • 2.Bxf4#
      • 1...Qxe6
        • 2.Rxe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(E);CHECK,XQ(g)
      • Vars
        • P(i);P_SPINP(i),XB(E)::R(H)
      • Refutation
        • S(h);CHECK,P_SPINS(h),XB(E)
    • Try
      • R(H);XQ(g)
      • Threat
        • DUALS(2)
      • Vars
        • P(i);P_SPINP(i),XR(H)::S(D)
      • Refutation
        • S(h);CHECK,P_SPINS(h),XR(H)
  • Actual
    • Q(J);N_PINQ(g)
    • Threat
      • QAR1(J),XP(c)
    • Vars
      • Q(g);CHECK,OGATE,XB(E)::R(H),XQ(g)
      • Q(g);CHECK,XR(H)::S(D),XQ(g)
      • Q(g);OGATE,XS(D)::B(E),XQ(g)
      • Q(g);OGATE,XP(G)::R1(H),XQ(g)
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