MESON Chess Problem Database

Problem Display
PID: 213903 (8/1bQ2K2/3N4/3k1p2/n3R3/3pb2B/1n6/8 w - - 0 1)

Antoshin, Vitaly Mikhailovich

Freie Presse, 1989

8/1bQ2K2/3N4/3k1p2/n3R3/3pb2B/1n6/8

#2

5 + 7

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...f4
      • 2.Be6#
  • Tries
    • 1.Re5+?
      • 1...Kd4
        • 2.Sb5#
        • 2.Sxf5#
      • 1...Kxe5!
  • Keys
    • 1.Sb5!
      • threat
        • 2.Re5#
      • 1...Kxe4
        • 2.Bg2#
      • 1...fxe4
        • 2.Be6#
      • 1...Bc6
        • 2.Qe5#
      • 1...Bd4
        • 2.Rxd4#
      • 1...Bf4
        • 2.Rd4#
      • 1...Bc5
        • 2.Qxb7#
      • 1...Sc4
        • 2.Qxc4#
      • 1...Sc5
        • 2.Sc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 1
  • Sets
    • P(f);OGATE::B(A)
  • Tries
    • Try
      • R(B);CHECK
      • Refutation
        • K(e);P-FLIGHT,XR(B)
  • Actual
    • S(C);
    • Threat
      • R1(B)
    • Vars
      • K(e);OGATEB,S_FLIGHT,XR(B)::B(A)
      • P(f);OGATE,SBLOCK,XR(B)::B(A)
      • B(g);SBLOCK::QAR1(D)
      • B(c);N_GUARD::R1(B),XB(c)
      • B(c);N_GUARD::R1(B)
      • B(c);SBLOCK::QAB(D),XB(g)
      • S(a);N_GUARD::QAB1(D),XS(a)
      • S(d);N_GUARD::S(C)
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