MESON Chess Problem Database

Problem Display
PID: 271711 (QR6/3p3B/4pp2/1Pp5/p1kn1R1K/2P5/2P5/4Bb2 w - - 0 1)

Pankratiev, Aleksandr Nikolaevich

The Hopper, 2023

QR6/3p3B/4pp2/1Pp5/p1kn1R1K/2P5/2P5/4Bb2

#2

9 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Bg2
      • 2.Bd3#
    • 1...Bd3
      • 2.Bxd3#
    • 1...Bh3
      • 2.Bd3#
    • 1...d5
      • 2.Qxa4#
  • Tries
    • 1.cxd4?
      • threat
        • 2.d5#
      • 1...Bg2
        • 2.Bd3#
      • 1...Bd3
        • 2.Bxd3#
      • 1...e5
        • 2.dxe5#
      • 1...d5
        • 2.Qxa4#
      • 1...cxd4!
  • Keys
    • 1.Be4!
      • threat
        • 2.Qxa4#
      • 1...Sf3+
        • 2.Bxf3#
      • 1...Sf5+
        • 2.Bxf5#
      • 1...Sxc2
        • 2.Bxc2#
      • 1...a3
        • 2.Qa4#
      • 1...Sc6
        • 2.Bxc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 4
  • Sets
    • B(a);N_GUARD::B(G)
    • B(a);N_GUARD::B(G),XB(a)
    • P(h);SBLOCK::QAR2(H),XP(b)
  • Tries
    • Try
      • P(C);XS(d)
      • Threat
        • R(D)+P(C)
      • Vars
        • B(a);N_GUARD::B(G)
        • B(a);N_GUARD::B(G),XB(a)
        • P(f);OGATE::R(D)+P(C),XP(f)
        • P(h);SBLOCK::QAR2(H),XP(b)
      • Refutation
        • P(e);P_SPINP(e),XP(C)
  • Actual
    • B(G);N_PINS(d)
    • Threat
      • QAR2(H),XP(b)
    • Vars
      • S(d);CHECK,OGATEB::R(D)+B(G),XS(d)
      • S(d);OGATE,XP(B)::R(D)+B(G),XS(d)
      • P(b);::QAR2(H)
      • S(d);OGATEB::R(D)+B(G),XS(d)
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