MESON Chess Problem Database

Problem Display
PID: 84820 (8/r1NnKnNq/p1BPR3/4pP2/rB1k1p1p/3P4/1P3P2/3R4 w - - 0 1)

Petite, Efren

Torre & Cavallo - Scacco!, 2000

8/r1NnKnNq/p1BPR3/4pP2/rB1k1p1p/3P4/1P3P2/3R4

#2

12 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qxf5
      • 2.Sxf5#
    • 1...Sc5
      • 2.Bc3#
    • 1...Sxd6
      • 2.Rxd6#
    • 1...e4
      • 2.Rxe4#
    • 1...a5
      • 2.Sb5#
  • Keys
    • 1.Rxe5!
      • threat
        • 2.Bc3#
        • 2.Re4#
        • 2.Rd5#
      • 1...Kxe5
        • 2.d4#
      • 1...Qxf5
        • 2.Bc3#
      • 1...Rxb4
        • 2.Rd5#
      • 1...Sdxe5
        • 2.Se6#
      • 1...Sfxe5
        • 2.Se6#
      • 1...Sxd6
        • 2.Bc3#
        • 2.Rd5#
      • 1...Ra3
        • 2.Re4#
        • 2.Rd5#
      • 1...Ra5
        • 2.Bc3#
        • 2.Re4#
      • 1...Sc5
        • 2.Bc3#
        • 2.Rd5#
      • 1...Sb6
        • 2.Bc3#
        • 2.Re4#
      • 1...Sf6
        • 2.Bc3#
      • 1...Sg5
        • 2.Bc3#
        • 2.Rd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 5
    • REMOVED MATES = 4
  • Sets
    • Q(j);XP(F)::S(L),XQ(j)
    • S(h);P_PINS(J),SBLOCK::B(E)
    • S(i);OGATE,P_PINS(L),XP(H)::R(I),XS(i)
    • P(e);OGATE::R1(I),XP(e)
    • P(f);N_GUARD::S(J)
  • Actual
    • R(I);XP(e)
    • Threat
      • DUALS(3)
    • Vars
      • K(b);OGATE,S_FLIGHT,XR(I)::P(D)
      • Q(j);XP(F)::B(E)
      • R(a);XB(E)::R1(I)
      • S(h);P_PINS(J),SBLOCK,XR(I)::S(L)
      • S(i);P_PINS(L),SBLOCK,XR(I)::S(J)
      • S(h);P_PINS(J)::B(E)
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Developed and maintained by Brian Stephenson.
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