MESON Chess Problem Database

Problem Display
PID: 85091 (6b1/1rpBN1B1/4p3/1Qbp4/2pPk1Pp/2P4N/n3PP2/6K1 w - - 0 1)

Pankratiev, Aleksandr Nikolaevich

diagrammes, 1989

6b1/1rpBN1B1/4p3/1Qbp4/2pPk1Pp/2P4N/n3PP2/6K1

#2

11 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Ra7
      • 2.Qb1#
    • 1...Bb6
      • 2.Qb1#
    • 1...e5
      • 2.Bf5#
  • Tries
    • 1.Sf5?
      • threat
        • 2.f3#
      • 1...exf5
        • 2.Bxf5#
      • 1...Bxd4!
    • 1.Bxe6?
      • threat
        • 2.Bf5#
      • 1...Bh7
        • 2.Bxd5#
      • 1...Bxe6!
  • Keys
    • 1.Sxd5!
      • threat
        • 2.Sf6#
      • 1...Kxd5
        • 2.Qc6#
      • 1...Bxd4
        • 2.Sg5#
      • 1...Sxc3
        • 2.Sxc3#
      • 1...exd5
        • 2.Bf5#
      • 1...Be7
        • 2.f3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 3
  • Sets
    • R(h);N_GUARD::QAB(H)
    • B(e);S_CUTR(h)::QAB(H)
    • P(g);OGATE::B(I)
  • Tries
    • Try
      • S(J);
      • Threat
        • P(C)
      • Vars
        • P(g);OGATE,XS(J)::B(I),XP(g)
      • Refutation
        • B(e);P_PINP(C),XP(F)
    • Try
      • B(I);XP(g)
      • Threat
        • B(I)
      • Vars
        • B(j);N_GUARD::B(I),XP(f)
      • Refutation
        • B(j);XB(I)
  • Actual
    • S(J);XP(f)
    • Threat
      • S(J)
    • Vars
      • K(c);OGATEB,P_SPINB(e),S_FLIGHT,XS(J)::QAB1(H)
      • B(e);P_PINP(C),XP(F)::S(E)
      • S(a);XP(D)::S(J),XS(a)
      • P(g);OGATE,SBLOCK,XS(J)::B(I)
      • B(e);::P(C)
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