MESON Chess Problem Database

Problem Display
PID: 98524 (3Q1B2/3P4/R1ppb2R/1Pnkn3/1Pp1p3/2P1Pp2/5P2/7K w - - 0 1)

Petkov, Petko Andonov

Problemas, 1971

3Q1B2/3P4/R1ppb2R/1Pnkn3/1Pp1p3/2P1Pp2/5P2/7K

#2

11 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bh3
      • 2.Rxd6#
    • 1...Bg4
      • 2.Rxd6#
    • 1...Bf5
      • 2.Rxd6#
    • 1...Bxd7
      • 2.Rxd6#
    • 1...Bf7
      • 2.Rxd6#
    • 1...Bg8
      • 2.Rxd6#
    • 1...cxb5
      • 2.Rxd6#
  • Tries
    • 1.Qe7?
      • threat
        • 2.Qxd6#
      • 1...Sb7
        • 2.Qxe6#
      • 1...Sf7!
  • Keys
    • 1.Qf6!
      • 1...Bxd7
        • 2.Qxd6#
      • 1...Sxa6
        • 2.Qxe6#
      • 1...Scxd7
        • 2.Qxe6#
      • 1...Sexd7
        • 2.Qd4#
      • 1...cxb5
        • 2.Rxd6#
      • 1...Bh3
        • 2.Qxd6#
      • 1...Bg4
        • 2.Qxd6#
      • 1...Bf5
        • 2.Qxd6#
      • 1...Bf7
        • 2.Qxd6#
      • 1...Bg8
        • 2.Qxd6#
      • 1...Sb3
        • 2.Qxe6#
      • 1...Scd3
        • 2.Qxe6#
      • 1...Sa4
        • 2.Qxe6#
      • 1...Sb7
        • 2.Qxe6#
      • 1...Sed3
        • 2.Qd4#
      • 1...Sg4
        • 2.Qd4#
      • 1...Sg6
        • 2.Qd4#
      • 1...Sf7
        • 2.Qd4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 6
    • ADDED MATES = 11
    • REMOVED MATES = 0
  • Sets
    • B(i);OGATE::R1(H),XP(h)
    • B(i);OGATE,XP(I)::R1(H),XP(h)
    • P(g);OGATE,XP(F)::R1(G),XP(h)
  • Tries
    • Try
      • Q(J);
      • Threat
        • QAR1(J),XP(h)
      • Vars
        • S(d);N_GUARD::QAB1(J),XB(i)
      • Refutation
        • S(f);
  • Actual
    • Q(J);
    • Vars
      • B(i);OGATE,XP(I)::QAR1(J),XP(h)
      • S(d);N_GUARD,XR(G)::QAB1(J),XB(i)
      • S(d);N_GUARD,XP(I)::QAB1(J),XB(i)
      • S(f);OGATE,XP(I)::QAR1(J)
      • P(g);OGATE,XP(F)::R1(G),XP(h)
      • B(i);OGATE::QAR1(J),XP(h)
      • S(d);N_GUARD::QAB1(J),XB(i)
      • S(f);OGATE::QAR1(J)
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