MESON Chess Problem Database

Problem Display
PID: 196444 (6B1/8/2K5/3pN2Q/3knR2/6P1/3P4/1b6 w - - 0 1)

Spare, Carl-Erik

Suomen Shakki, 1984

6B1/8/2K5/3pN2Q/3knR2/6P1/3P4/1b6

#2

7 + 4

SOLUTION

  • SOUND
  • Tries
    • 1.Bxd5?
      • 1...Ba2
        • 2.Rxe4#
      • 1...Bd3
        • 2.Sf3#
      • 1...Bc2!
    • 1.Qf7?
      • threat
        • 2.Qxd5#
      • 1...Kxe5
        • 2.Qxd5#
      • 1...Ba2!
    • 1.Qh1?
      • 1...Ba2
        • 2.Qa1#
      • 1...Bc2
        • 2.Qa1#
      • 1...Bd3
        • 2.Qa1#
      • 1...Kxe5!
  • Keys
    • 1.Qd1!
      • 1...Kxe5
        • 2.d4#
      • 1...Ba2
        • 2.Qa1#
      • 1...Bc2
        • 2.Qa1#
      • 1...Bd3
        • 2.Qa1#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(G);XP(d)
      • Vars
        • B(a);N_GUARD::R1(C),XS(c)
        • B(a);SBLOCK::S(D)
      • Refutation
        • B(a);
    • Try
      • Q(E);
      • Threat
        • QAR1(E),XP(d)
      • Vars
        • K(b);N_SPINS(c),S_FLIGHT,XS(D)::QAR1(E),XP(d)
      • Refutation
        • B(a);
    • Try
      • Q(E);
      • Vars
        • B(a);OGATE::QAB(E)
      • Refutation
        • K(b);N_SPINS(c),S_FLIGHT,XS(D)
  • Actual
    • Q(E);
    • Vars
      • K(b);N_SPINS(c),OGATE,S_FLIGHT,XS(D)::P(A)
      • B(a);OGATE::QAB(E)
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