MESON Chess Problem Database

Problem Display
PID: 273733 (7K/1R5p/P1k1pQ2/r6r/3nN3/B7/6B1/b2R4 w - - 0 1)

Becker, Chris

5th Comm., Grunenwald/Monreal JT (diagrammes), 1978

7K/1R5p/P1k1pQ2/r6r/3nN3/B7/6B1/b2R4

#2

8 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Kd5
      • 2.Sd6#
    • 1...Sc2
      • 2.Rd6#
    • 1...Se2
      • 2.Rd6#
    • 1...Sb3
      • 2.Rd6#
    • 1...Sf3
      • 2.Rd6#
    • 1...Sb5
      • 2.Sg5#
    • 1...Sf5
      • 2.Sc5#
  • Tries
    • 1.Sg5+?
      • 1...Sf3
        • 2.Rd6#
      • 1...Rd5!
  • Keys
    • 1.Qg7!
      • threat
        • 2.Qd7#
      • 1...Kd5
        • 2.Sd6#
      • 1...Rad5
        • 2.Qc7#
      • 1...Rhd5
        • 2.Qc7#
      • 1...Sc2
        • 2.Rd6#
      • 1...Se2
        • 2.Rd6#
      • 1...Sb3
        • 2.Rd6#
      • 1...Sf3
        • 2.Rd6#
      • 1...Sb5
        • 2.Sg5#
      • 1...Sf5
        • 2.Sc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(e);N_SPINP(f),P_SPINS(b),S_CUTR(c),S_CUTR(d),S_FLIGHT::B(B)+S(D)
    • S(b);OGATE,P_PINQ(F)::R1(A)
    • S(b);N_GUARD,P_PINQ(F),S_CUTR(c)::B(B)+S(D)
    • S(b);N_GUARD,P_PINQ(F),S_CUTR(d)::B(B)+S(D)
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • S(b);OGATE,P_PINQ(F),P_SPINS(b)::R1(A)
      • Refutation
        • R(c);P_SPINR(c)
  • Actual
    • Q(F);N_PINP(f)
    • Threat
      • QAB1(F)
    • Vars
      • K(e);P_SPINS(b),S_CUTR(c),S_CUTR(d),S_FLIGHT::B(B)+S(D)
      • R(c);SBLOCK::QAR1(F)
      • R(d);SBLOCK::QAR1(F)
      • S(b);OGATE,P_PINQ(F)::R1(A)
      • S(b);N_GUARD,P_PINQ(F),S_CUTR(c)::B(B)+S(D)
      • S(b);N_GUARD,P_PINQ(F),S_CUTR(d)::B(B)+S(D)
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