MESON Chess Problem Database

Problem Display
PID: 73409 (3Q4/rP3pr1/2pP2pR/p1kN3P/P5R1/P2P4/B4bK1/6n1 w - - 0 1)

Pankratiev, Aleksandr Nikolaevich

Petite, Efren

Phenix, 1997

3Q4/rP3pr1/2pP2pR/p1kN3P/P5R1/P2P4/B4bK1/6n1

#2

12 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Be1
      • 2.d4#
    • 1...Bg3
      • 2.d4#
    • 1...Bh4
      • 2.d4#
    • 1...cxd5
      • 2.Qc7#
    • 1...gxh5
      • 2.Qb6#
    • 1...g5
      • 2.Qb6#
  • Tries
    • 1.Sc3?
      • threat
        • 2.Rc4#
      • 1...Bd4
        • 2.Se4#
      • 1...gxh5!
    • 1.Se3?
      • threat
        • 2.Rc4#
        • 2.d4#
      • 1...gxh5
        • 2.d4#
      • 1...Se2
        • 2.Rc4#
      • 1...Sf3
        • 2.Rc4#
      • 1...Bxe3!
    • 1.Sb6?
      • threat
        • 2.Rc4#
      • 1...gxh5
        • 2.Sd7#
      • 1...Bd4!
  • Keys
    • 1.Sf6!
      • threat
        • 2.Rc4#
      • 1...gxh5
        • 2.Sd7#
      • 1...Bd4
        • 2.Se4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 5
  • Sets
    • B(b);N_GUARD::P(D)
    • P(e);OGATEB,XS(G)::QAR2(L)
    • P(f);P_PINR(F),XP(H)::QAB1(L)
    • P(f);::QAB1(L)
  • Tries
    • Try
      • S(G);
      • Threat
        • R1(F)
      • Vars
        • B(b);SBLOCK::S(G)
      • Refutation
        • P(f);P_PINR(F),XP(H)
    • Try
      • S(G);
      • Threat
        • DUALS(2)
      • Vars
        • P(f);P_PINR(F),XP(H)::P(D)
        • S(a);::R1(F)
      • Refutation
        • B(b);XS(G)
    • Try
      • S(G);
      • Threat
        • R1(F)
      • Vars
        • P(f);P_PINR(F),XP(H)::S(G)
      • Refutation
        • B(b);
  • Actual
    • S(G);
    • Threat
      • R1(F)
    • Vars
      • P(f);P_PINR(F),XP(H)::S(G)
      • B(b);SBLOCK::S(G)
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