MESON Chess Problem Database

Problem Display
PID: 64443 (2bn1RN1/Rn4pK/1P1pkb2/8/8/1N3P2/7B/3Q3B w - - 0 1)

Lindstrom, Ismo

2nd Prize, Satakunnan Tehtavakerho TT, 1981

2bn1RN1/Rn4pK/1P1pkb2/8/8/1N3P2/7B/3Q3B

#2

10 + 7

117 Suomen Shakki 1983
3752 FIDE Album (1980-1982) 1988

SOLUTION

  • SOUND
  • Sets
    • 1...Kf5
      • 2.Qd5#
    • 1...Kd7
      • 2.Qxd6#
  • Tries
    • 1.Qd5+?
      • 1...Kd7
        • 2.Sc5#
        • 2.Qxd6#
      • 1...Kxd5!
    • 1.Qxd6+?
      • 1...Kf5
        • 2.Qe5#
        • 2.Qd5#
      • 1...Sxd6!
  • Keys
    • 1.f4!
      • threat
        • 2.Qg4#
      • 1...Kf5
        • 2.Sd4#
      • 1...Kd7
        • 2.Sc5#
      • 1...d5
        • 2.Qxd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(b);P_SPINB(c),S_FLIGHT::QAR2(A)
    • K(b);P_SPINP(a),P_SPINS(d),S_FLIGHT::QAR1(A),XP(a)
  • Tries
    • Try
      • Q(A);CHECK
      • Refutation
        • K(b);S_FLIGHT,XQ(A)
    • Try
      • Q(A);CHECK,XP(a)
      • Refutation
        • S(d);XQ(A)
  • Actual
    • P(E);
    • Threat
      • QAB(A)
    • Vars
      • K(b);P_SPINB(c),S_FLIGHT::S(D)
      • K(b);P_SPINP(a),P_SPINS(d),S_FLIGHT::S(D)
      • P(a);::QAB1(A),XP(a)
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