MESON Chess Problem Database

Problem Display
PID: 84806 (8/5p2/4RPB1/R1n1p3/nPk1P3/1N1N4/1PK5/8 w - - 0 1)

Petite, Efren

Telescacco 92, 1998

8/5p2/4RPB1/R1n1p3/nPk1P3/1N1N4/1PK5/8

#2

10 + 5

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sxb2
      • 2.Rxc5#
    • 1...Sc3
      • 2.Rxc5#
    • 1...Sb6
      • 2.Rxc5#
  • Tries
    • 1.Rb6?
      • threat
        • 2.Sxe5#
      • 1...Sxb6
        • 2.Rxc5#
      • 1...Sxd3
        • 2.Bxf7#
      • 1...Sd7
        • 2.Bxf7#
      • 1...Sxb3!
    • 1.Rc6?
      • threat
        • 2.Bxf7#
      • 1...Sc3
        • 2.Raxc5#
        • 2.Rcxc5#
      • 1...Sb6
        • 2.Raxc5#
        • 2.Rcxc5#
      • 1...fxg6!
    • 1.Rd6?
      • threat
        • 2.Sd2#
      • 1...Sxb3
        • 2.Bxf7#
      • 1...Sxe4
        • 2.Bxf7#
      • 1...Sxd3!
  • Keys
    • 1.Bxf7!
      • threat
        • 2.Rc6#
      • 1...Sxb3
        • 2.Rd6#
      • 1...Sxd3
        • 2.Rb6#
      • 1...Sxe6
        • 2.Bxe6#
      • 1...Sc3
        • 2.Rxc5#
      • 1...Sb6
        • 2.Rxc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • S(a);N_GUARD,XP(A)::R1(G),XS(c)
    • S(a);N_GUARD::R1(G),XS(c)
  • Tries
    • Try
      • R(H);
      • Threat
        • S(D),XP(d)
      • Vars
        • S(a);N_GUARD,XR(H)::R1(G),XS(c)
        • S(c);N_GUARD,XS(D)::B(J),XP(e)
        • S(c);N_GUARD::B(J),XP(e)
      • Refutation
        • S(c);XS(C)
    • Try
      • R(H);P_PINS(c)
      • Threat
        • B(J),XP(e)
      • Refutation
        • P(e);XB(J)
    • Try
      • R(H);
      • Threat
        • S(C)
      • Vars
        • S(c);N_GUARD,XS(C)::B(J),XP(e)
        • S(c);N_GUARD,XP(F)::B(J),XP(e)
      • Refutation
        • S(c);XS(D)
  • Actual
    • B(J);XP(e)
    • Threat
      • B(J)+R(H)
    • Vars
      • S(c);N_GUARD,XS(C)::B(J)+R(H)
      • S(c);N_GUARD,XS(D)::B(J)+R(H)
      • S(c);OGATE,P_SPINS(c),XR(H)::B(J),XS(c)
      • S(a);N_GUARD::R1(G),XS(c)
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