MESON Chess Problem Database

Problem Display
PID: 107650 (4N2q/7p/1K1PQ3/4P1N1/3kp3/8/b1R2P2/5B2 w - - 0 1)

Bakcsi, Gyorgy

Pedagogusok Lapja, 1981

4N2q/7p/1K1PQ3/4P1N1/3kp3/8/b1R2P2/5B2

#2

9 + 5

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bb1
      • 2.Rc4#
    • 1...Bc4
      • 2.Rxc4#
  • Tries
    • 1.Qc4+?
      • 1...Kxe5
        • 2.Qxe4#
      • 1...Bxc4!
    • 1.Qc8?
      • threat
        • 2.Qc5#
      • 1...Kd5
        • 2.Qc5#
      • 1...Qxe5
        • 2.Rd2#
      • 1...Bd5
        • 2.Qc3#
      • 1...Kxe5!
  • Keys
    • 1.Qg4!
      • threat
        • 2.Qxe4#
      • 1...Kd5
        • 2.Qxe4#
      • 1...Kxe5
        • 2.Qxe4#
      • 1...Qxe5
        • 2.Qd1#
      • 1...Bd5
        • 2.Sf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • B(a);N_GUARD::R1(B)
    • B(a);N_GUARD::R1(B),XB(a)
  • Tries
    • Try
      • Q(H);CHECK
      • Vars
        • K(b);OGATE,S_FLIGHT,XP(D)::QAR1(H),XP(c)
      • Refutation
        • B(a);XQ(H)
    • Try
      • Q(H);
      • Threat
        • QAB1(H)
      • Vars
        • K(b);P-FLIGHT::QAR1(H)
        • Q(e);SBLOCK,XP(D)::R(B)
        • B(a);SBLOCK::QAB1(H)
      • Refutation
        • K(b);S_FLIGHT,XP(D)
  • Actual
    • Q(H);P_PINP(c)
    • Threat
      • QAR1(H),XP(c)
    • Vars
      • K(b);N_SPINP(c),P-FLIGHT::QAB1(H),XP(c)
      • K(b);N_SPINP(c),S_FLIGHT,XP(D)::QAR1(H),XP(c)
      • Q(e);SBLOCK,XP(D)::QAR(H)
      • B(a);SBLOCK::S(E)
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