MESON Chess Problem Database

Problem Display
PID: 187542 (8/8/8/4p3/3k4/B4Q2/3N4/1b2N1K1 w - - 0 1)

Tapanimaki, Jukka

Suomen Shakki, 1982

8/8/8/4p3/3k4/B4Q2/3N4/1b2N1K1

#2

5 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Ba2
      • 2.Sc2#
      • 2.Qd3#
    • 1...Bc2
      • 2.Sxc2#
    • 1...Bd3
      • 2.Qxd3#
  • Tries
    • 1.Sxb1?
      • threat
        • 2.Qd3#
      • 1...Kc4
        • 2.Qd3#
      • 1...e4!
    • 1.Qe4+?
      • 1...Kc3
        • 2.Qb4#
      • 1...Bxe4!
    • 1.Qc3+?
      • 1...Kd5
        • 2.Qc4#
      • 1...Kxc3!
  • Keys
    • 1.Qf8!
      • threat
        • 2.Qc5#
      • 1...Kc3
        • 2.Qb4#
      • 1...Ke3
        • 2.Qf2#
      • 1...Kd5
        • 2.Qd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • B(a);N_GUARD::S(A),XB(a)
    • B(a);N_GUARD::QAR1(E),XB(a)
  • Tries
    • Try
      • S(C);XB(a)
      • Threat
        • QAR1(E)
      • Vars
        • K(b);P-FLIGHT::QAB1(E)
      • Refutation
        • P(c);
    • Try
      • Q(E);CHECK
      • Vars
        • K(b);OGATE,S_FLIGHT::QAB1(E)
      • Refutation
        • B(a);XQ(E)
    • Try
      • Q(E);CHECK
      • Vars
        • K(b);P-FLIGHT::QAB1(E)
      • Refutation
        • K(b);S_FLIGHT,XQ(E)
  • Actual
    • Q(E);
    • Threat
      • QAB1(E)
    • Vars
      • K(b);S_FLIGHT::QAB1(E)
      • K(b);P-FLIGHT::QAR1(E)
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