MESON Chess Problem Database

Problem Display
PID: 257610 (8/3QbB2/2r2p2/2pN1n2/2n1kN2/8/1BP2K2/8 w - - 0 1)

Dowd, Steven B

Troll, 2021

(First published on Wed Jul 21 2021)

8/3QbB2/2r2p2/2pN1n2/2n1kN2/8/1BP2K2/8

#2

7 + 7

5454 Near Snap 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Scd6
      • 2.Qe6#
  • Tries
    • 1.Sg6?
      • threat
        • 2.Sc3#
      • 1...Bd6
        • 2.Sxf6#
      • 1...Scd6
        • 2.Qe6#
      • 1...Sfd6
        • 2.Qg4#
      • 1...Rd6!
    • 1.Sc3+?
      • 1...Ke5
        • 2.Sd3#
        • 2.Sg6#
      • 1...Kxf4!
  • Keys
    • 1.Sd3!
      • threat
        • 2.Sc3#
      • 1...Rd6
        • 2.Sxc5#
      • 1...Bd6
        • 2.Sxf6#
      • 1...Scd6
        • 2.Qe6#
      • 1...Sfd6
        • 2.Qg4#

Anticipated by 80339(1936)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • S(a);N_GUARD,S_CUTR(e)::QAR2(F)
  • Tries
    • Try
      • S(D);
      • Threat
        • S(E)
      • Vars
        • B(g);N_GUARD,S_CUTR(e)::S(E),XP(f)
        • S(a);N_GUARD,S_CUTR(e)::QAR2(F)
        • S(d);OGATE::QAR2(F)
      • Refutation
        • R(e);
    • Try
      • S(E);CHECK
      • Refutation
        • K(b);P-FLIGHT,XS(D)
  • Actual
    • S(D);
    • Threat
      • S(E)
    • Vars
      • R(e);N_GUARD,S_CUTB(g)::S(D),XP(c)
      • B(g);N_GUARD,S_CUTR(e)::S(E),XP(f)
      • S(a);N_GUARD,S_CUTR(e)::QAR2(F)
      • S(d);OGATE::QAR2(F)
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