MESON Chess Problem Database

Problem Display
PID: 273502 (8/8/2P4Q/2pNpK2/3kB3/4N3/1P1b4/8 w - - 0 1)

Pavlov, Mikhail Aleksandrovich

3rd Comm., Buletin Problemistic, 1997

8/8/2P4Q/2pNpK2/3kB3/4N3/1P1b4/8

#2

7 + 4

15601 Albrecht-Leiss-Degener Collection 2023

SOLUTION

  • SOUND
  • Sets
    • 1...Bc3
      • 2.bxc3#
  • Tries
    • 1.Sb6?
      • threat
        • 2.Sc2#
      • 1...Bxe3
        • 2.Qd6#
      • 1...c4!
    • 1.Sc7?
      • threat
        • 2.Sb5#
        • 2.Se6#
      • 1...c4
        • 2.Se6#
      • 1...Bxe3!
    • 1.Qg7?
      • threat
        • 2.Qxe5#
      • 1...c4
        • 2.Qa7#
      • 1...Bxe3!
    • 1.b3?
      • threat
        • 2.Sc2#
      • 1...Bxe3
        • 2.Qxe3#
      • 1...c4!
  • Keys
    • 1.Qd6!
      • threat
        • 2.Qxe5#
      • 1...Bxe3
        • 2.Sb6#
      • 1...c4
        • 2.Sc2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • B(a);OGATE::P(A),XB(a)
  • Tries
    • Try
      • S(D);
      • Threat
        • S(B)
      • Vars
        • B(a);SBLOCK,XS(B)::QAR2(G)
      • Refutation
        • P(c);
    • Try
      • S(D);
      • Threat
        • DUALS(2)
      • Vars
        • P(c);::S(D)
      • Refutation
        • B(a);XS(B)
    • Try
      • Q(G);P_PINP(d)
      • Threat
        • QAB1(G),XP(d)
      • Vars
        • P(c);OGATEB::QAB(G)
      • Refutation
        • B(a);XS(B)
    • Try
      • P(A);
      • Threat
        • S(B)
      • Vars
        • B(a);OGATE,XS(B)::QAB1(G),XB(a)
      • Refutation
        • P(c);
  • Actual
    • Q(G);
    • Threat
      • QAB1(G),XP(d)
    • Vars
      • B(a);SBLOCK,XS(B)::QAR(G)+S(D)
      • P(c);SBLOCK::S(B)
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