MESON Chess Problem Database

Problem Display
PID: 233741 (1K1R2B1/3b1p2/4pp1n/2p3rR/4k1p1/NQ2N1P1/1B2P3/4n3 w - - 0 1)

Pankratiev, Aleksandr Nikolaevich

Freie Presse, 1985

1K1R2B1/3b1p2/4pp1n/2p3rR/4k1p1/NQ2N1P1/1B2P3/4n3

#2

10 + 10

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Sc2
      • 2.Qd3#
    • 1...Sg2
      • 2.Qd3#
    • 1...Sd3
      • 2.Qxd3#
    • 1...Sf3
      • 2.Qd3#
  • Tries
    • 1.Sb1?
      • threat
        • 2.Sd2#
      • 1...Sd3
        • 2.Qxd3#
      • 1...Sf3
        • 2.Qd3#
      • 1...Rd5!
    • 1.Sac4?
      • threat
        • 2.Sd2#
        • 2.Sd6#
      • 1...Sd3
        • 2.Qxd3#
      • 1...Sf3
        • 2.Sd6#
        • 2.Qc2#
        • 2.Qd3#
      • 1...Sf5
        • 2.Sd2#
      • 1...Rd5!
  • Keys
    • 1.Sec4!
      • threat
        • 2.Sd6#
      • 1...Kd5
        • 2.Qb7#
      • 1...Kf5
        • 2.Bh7#
      • 1...Rd5
        • 2.Qe3#
      • 1...Sd3
        • 2.Qxd3#
      • 1...Sf5
        • 2.Sd2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 3
  • Sets
    • S(a);N_GUARD::QAB1(D)
    • S(a);N_GUARD::QAB1(D),XS(a)
  • Tries
    • Try
      • S(C);
      • Threat
        • S(C)
      • Vars
        • S(a);N_GUARD::QAB1(D),XS(a)
        • S(a);N_GUARD::QAB1(D)
      • Refutation
        • R(e);
    • Try
      • S(C);
      • Threat
        • DUALS(2)
      • Vars
        • S(a);N_GUARD::QAB1(D),XS(a)
        • S(h);::S(C)
      • Refutation
        • R(e);
  • Actual
    • S(E);
    • Threat
      • S(E)
    • Vars
      • K(b);P_SPINB(i),P_SPINR(e),S_FLIGHT::QAB(D)
      • K(b);P_SPINR(e),S_FLIGHT::B(J)
      • R(e);::QAR1(D)
      • S(a);N_GUARD::QAB1(D),XS(a)
      • S(h);SBLOCK::S(E)
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