MESON Chess Problem Database

Problem Display
PID: 259123 (7K/P3N2n/1R2P2R/rn2k3/1P4PP/1P1p3N/3P2BP/6B1 w - - 0 1)

Pavlov, Mikhail Aleksandrovich

3rd HM., Buletin Problemistic, 1989

7K/P3N2n/1R2P2R/rn2k3/1P4PP/1P1p3N/3P2BP/6B1

#2

15 + 5

15601 Albrecht-Leiss-Degener Collection 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Sd6
      • 2.Sc6#
    • 1...Sf6
      • 2.Sg6#
  • Tries
    • 1.Kg7?
      • threat
        • 2.Sg6#
      • 1...Sd6
        • 2.Sc6#
      • 1...Sf8
        • 2.Rh5#
      • 1...Rxa7!
    • 1.Bd4+?
      • 1...Kxd4
        • 2.Sc6#
      • 1...Sxd4!
    • 1.Bc5?
      • threat
        • 2.Sc6#
      • 1...Sd4
        • 2.Bd6#
      • 1...Sf6
        • 2.Sg6#
      • 1...Sxa7!
    • 1.a8Q?
      • threat
        • 2.Qe4#
        • 2.Qd5#
      • 1...Sg5
        • 2.Qd5#
      • 1...Sa3
        • 2.Qe4#
        • 2.Qb8#
      • 1...Sc3
        • 2.Qb8#
      • 1...Sd4
        • 2.Qe4#
        • 2.Qb8#
      • 1...Sd6
        • 2.Sc6#
      • 1...Sa7
        • 2.Qe4#
        • 2.Qb8#
      • 1...Sc7
        • 2.Qe4#
      • 1...Sf6
        • 2.Sg6#
      • 1...Rxa8+!
  • Keys
    • 1.Sf2!
      • threat
        • 2.Sxd3#
      • 1...Kd4
        • 2.Sc6#
      • 1...Kf4
        • 2.Sg6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • S(c);SBLOCK::S(N)
    • S(e);SBLOCK::S(N)
  • Tries
    • Try
      • K(O);S_FLIGHT
      • Threat
        • S(N)
      • Vars
        • S(c);SBLOCK::S(N)
        • S(e);N_GUARD::R(L)
      • Refutation
        • R(b);P_PINS(N),XP(M)
    • Try
      • B(A);CHECK
      • Vars
        • K(d);N_GUARD,S_FLIGHT,XB(A)::S(N)
      • Refutation
        • S(c);XB(A)
    • Try
      • B(A);
      • Threat
        • S(N)
      • Vars
        • S(c);N_GUARD,SBLOCK::B(A)
        • S(e);SBLOCK::S(N)
      • Refutation
        • S(c);XP(M)
    • Try
      • P(M);
      • Threat
        • DUALS(2)
      • Vars
        • S(e);::QAR1(M)
        • S(c);N_GUARD::QAB(M)
        • S(c);SBLOCK::S(N)
        • S(c);::QAR1(M)
        • S(e);SBLOCK::S(N)
      • Refutation
        • R(b);CHECK,XQ(M)
  • Actual
    • S(F);
    • Threat
      • S(F),XP(a)
    • Vars
      • K(d);N_GUARD,S_FLIGHT::S(N)
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