MESON Chess Problem Database

Problem Display
PID: 57111 (2r2R2/1N1n4/2PPkbP1/p7/6P1/2P3Q1/K1B1r3/4Rb2 w - - 0 1)

Sammelius, Carel Johan Robert

3rd Prize, Na Smenu!, 1966

2r2R2/1N1n4/2PPkbP1/p7/6P1/2P3Q1/K1B1r3/4Rb2

#2

11 + 7

3772 FIDE Album (1965-1967) 1976

SOLUTION

  • SOUND
  • Tries
    • 1.Qd3?
      • threat
        • 2.Qf5#
      • 1...Ke5
        • 2.Qf5#
      • 1...Re5
        • 2.Bb3#
      • 1...Be5
        • 2.Qc4#
      • 1...Se5
        • 2.Sc5#
      • 1...Re4!
  • Keys
    • 1.Qf3!
      • threat
        • 2.Qf5#
      • 1...Ke5
        • 2.Qf5#
      • 1...Re5
        • 2.Bf5#
      • 1...Be5
        • 2.Qf7#
      • 1...Se5
        • 2.Rxf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(E);
      • Threat
        • QAB1(E)
      • Vars
        • K(d);P-FLIGHT::QAR1(E)
        • R(b);N_PINB(C)::B(C)
        • B(e);N_SPINR(b),SBLOCK::QAB(E)
        • S(f);N_GUARD,N_SPINR(b),SBLOCK::S(J)
      • Refutation
        • R(b);N_PINB(C)
  • Actual
    • Q(E);
    • Threat
      • QAB1(E)
    • Vars
      • K(d);P-FLIGHT::QAR1(E)
      • R(b);N_PINB(C)::B(C)
      • B(e);N_SPINR(b),OGATE,SBLOCK::QAB1(E)
      • S(f);N_GUARD,N_SPINR(b),SBLOCK::R1(K),XB(e)
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