MESON Chess Problem Database

Problem Display
PID: 256449 (8/2K5/1Q2B3/3P4/1P2k3/1P1p2B1/8/6N1 w - - 0 1)

Rychkov, Vladimir Nikolaevich

Buletin Problemistic, 1983

8/2K5/1Q2B3/3P4/1P2k3/1P1p2B1/8/6N1

#2

8 + 2

15601 Albrecht-Leiss-Degener Collection 2021
5454 Near Snap 2023

SOLUTION

  • SOUND
  • Tries
    • 1.Bh4?
      • 1...Kf4
        • 2.Qd4#
      • 1...Ke5
        • 2.Qe3#
      • 1...d2!
    • 1.Bh3?
      • 1...Kxd5
        • 2.Bg2#
      • 1...d2!
    • 1.Bg4?
      • 1...Kxd5
        • 2.Bf3#
      • 1...d2!
    • 1.Bf5+?
      • 1...Kxd5
        • 2.Qc5#
        • 2.Qd6#
      • 1...Kxf5!
    • 1.Bf7?
      • 1...Kf5
        • 2.Qg6#
      • 1...d2!
    • 1.Bc8?
      • 1...Kxd5
        • 2.Bb7#
      • 1...d2!
    • 1.Qd6?
      • threat
        • 2.Qf4#
        • 2.Qe5#
      • 1...Ke3
        • 2.Qf4#
      • 1...Kd4
        • 2.Qe5#
      • 1...d2!
  • Keys
    • 1.Bf2!
      • threat
        • 2.Qe3#
        • 2.Qd4#
      • 1...Kf4
        • 2.Qe3#
      • 1...Ke5
        • 2.Qd4#

Anticipated by 38982(1972), 125339(1972), 12379(1978)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(C);
      • Vars
        • K(b);N_GUARD,P-FLIGHT::QAR2(F)
      • Refutation
        • P(a);
    • Try
      • B(G);
      • Vars
        • K(b);N_GUARD,S_FLIGHT,XP(E)::B(G)
      • Refutation
        • P(a);
    • Try
      • B(G);
      • Vars
        • K(b);N_GUARD,S_FLIGHT,XP(E)::B(G)
      • Refutation
        • P(a);
    • Try
      • B(G);CHECK
      • Refutation
        • K(b);S_FLIGHT,XB(G)
    • Try
      • B(G);
      • Vars
        • K(b);N_GUARD,S_FLIGHT::QAB1(F)
      • Refutation
        • P(a);
    • Try
      • B(G);
      • Vars
        • K(b);OGATEB,S_FLIGHT,XP(E)::B(G)
      • Refutation
        • P(a);
    • Try
      • Q(F);
      • Threat
        • DUALS(2)
      • Vars
        • K(b);P-FLIGHT::QAB1(F)
      • Refutation
        • P(a);
  • Actual
    • B(C);
    • Threat
      • DUALS(2)
    • Vars
      • K(b);P-FLIGHT::QAB1(F)
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