MESON Chess Problem Database

Problem Display
PID: 221479 (k7/2B5/3N1p2/1N2pr2/4qr2/5B2/4QRb1/4K1R1 w - - 0 1)

Takacs, Peter

Suomen Shakki, 1962

k7/2B5/3N1p2/1N2pr2/4qr2/5B2/4QRb1/4K1R1

#2

8 + 7

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Rxf3
      • 2.Qxe4#
    • 1...Bf1
      • 2.Rg8#
    • 1...Bh1
      • 2.Rg8#
    • 1...Bxf3
      • 2.Rg8#
    • 1...Bh3
      • 2.Rg8#
  • Tries
    • 1.Bxe4+?
      • 1...Bxe4
        • 2.Rg8#
        • 2.Qa2#
      • 1...Rxe4!
  • Keys
    • 1.Qe3!
      • threat
        • 2.Ra2#
      • 1...Qxf3
        • 2.Qa7#
      • 1...Rxf3
        • 2.Qxe4#
      • 1...Bxf3
        • 2.Rg8#
      • 1...Qd5
        • 2.Qa7#
      • 1...Qc6
        • 2.Qa7#
      • 1...Qb7
        • 2.Qa7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 3
  • Sets
    • R(c);N_GUARD,N_SPINQ(b),XB(E)::QAB(C),XQ(b)
    • B(a);OGATE::R(B)
    • B(a);N_SPINQ(b),OGATE,XB(E)::R(B)
  • Tries
    • Try
      • B(E);CHECK,N_SPINQ(C),XQ(b)
      • Refutation
        • R(c);P_PINQ(C),XB(E)
  • Actual
    • Q(C);
    • Threat
      • R(D)
    • Vars
      • Q(b);N_PINQ(C),N_SPINQ(b),XB(E)::QAR1(C)
      • R(c);N_GUARD,N_SPINQ(b),XB(E)::QAB(C),XQ(b)
      • B(a);N_SPINQ(b),OGATE,XB(E)::R(B)
      • Q(b);N_PINQ(C)::QAR1(C)
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