MESON Chess Problem Database

Problem Display
PID: 265949 (1N6/7K/RN2P3/nk3B2/2p2pP1/B1p3pQ/2P1n3/b3R3 w - - 0 1)

Mochalkin, Oleksandr Viktorovich

Postnikov, Oleksandr Borisovich

Buletin Problemistic, 1994

1N6/7K/RN2P3/nk3B2/2p2pP1/B1p3pQ/2P1n3/b3R3

#2

11 + 8

15601 Albrecht-Leiss-Degener Collection 2022
5454 Near Snap 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Sc1
      • 2.Re5#
    • 1...Sg1
      • 2.Re5#
    • 1...Sd4
      • 2.Re5#
  • Tries
    • 1.Be4?
      • threat
        • 2.Qh5#
      • 1...Sb3
        • 2.Bc6#
      • 1...Sc6
        • 2.Bxc6#
      • 1...Sb7
        • 2.Bc6#
      • 1...Sd4!
    • 1.Bg6?
      • threat
        • 2.Qh5#
      • 1...Sd4
        • 2.Re5#
      • 1...Sb3
        • 2.Be8#
      • 1...Sb7
        • 2.Be8#
      • 1...Sc6!
    • 1.Qg2?
      • threat
        • 2.Qd5#
      • 1...Sb3
        • 2.Qc6#
      • 1...Sb7
        • 2.Qc6#
      • 1...f3!
    • 1.Qh5?
      • threat
        • 2.Bd3#
        • 2.Be4#
        • 2.Bg6#
      • 1...Sd4
        • 2.Re5#
      • 1...Sb3
        • 2.Qe8#
      • 1...Sb7
        • 2.Qe8#
      • 1...Sc6!
  • Keys
    • 1.Bd3!
      • threat
        • 2.Qh5#
      • 1...Sd4
        • 2.Re5#
      • 1...Sb3
        • 2.Bxc4#
      • 1...Sc6
        • 2.Bxc4#
      • 1...Sb7
        • 2.Bxc4#

This anticipates 47464(1998)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • S(b);OGATE::R(A)
  • Tries
    • Try
      • B(F);
      • Threat
        • QAR(D)
      • Vars
        • S(g);N_GUARD::B(F)
        • S(g);N_GUARD::B(F),XS(g)
      • Refutation
        • S(b);
    • Try
      • B(F);
      • Threat
        • QAR(D)
      • Vars
        • S(b);OGATE::R(A)
        • S(g);N_GUARD::B(F)
      • Refutation
        • S(g);
    • Try
      • Q(D);
      • Threat
        • QAR2(D)
      • Vars
        • S(g);N_GUARD::QAB1(D)
      • Refutation
        • P(f);
    • Try
      • Q(D);
      • Threat
        • DUALS(3)
      • Vars
        • S(b);OGATE::R(A)
        • S(g);N_GUARD::QAB(D)
      • Refutation
        • S(g);
  • Actual
    • B(F);P_PINP(e)
    • Threat
      • QAR(D)
    • Vars
      • S(b);OGATE::R(A)
      • S(g);N_GUARD::B(F),XP(e)
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