MESON Chess Problem Database

Problem Display
PID: 239862 (rb6/1p3BKn/5P2/pR3p1N/4k3/2pR4/4P1n1/4N3 w - - 0 1)

Petite, Efren

Themes-64, 1981

rb6/1p3BKn/5P2/pR3p1N/4k3/2pR4/4P1n1/4N3

#2

8 + 9

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Be5
      • 2.Bd5#
    • 1...Sf4
      • 2.Sg3#
    • 1...f4
      • 2.Bg6#
  • Tries
    • 1.Sc2?
      • threat
        • 2.Rd4#
      • 1...Be5
        • 2.Bd5#
      • 1...Ba7!
    • 1.Rb4+?
      • 1...Ke5
        • 2.Sf3#
        • 2.Rd5#
      • 1...axb4!
    • 1.Re5+?
      • 1...Bxe5
        • 2.Bd5#
      • 1...Kxe5!
  • Keys
    • 1.Sf3!
      • threat
        • 2.Bd5#
      • 1...Sxf6
        • 2.Sg5#
      • 1...Se3
        • 2.Rd4#
      • 1...Sf4
        • 2.Sg3#
      • 1...f4
        • 2.Bg6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • B(i);P_PINP(F),SBLOCK::B(G)
    • S(a);SBLOCK,S_CUTB(i)::S(E)
    • P(e);OGATEB::B(G)
  • Tries
    • Try
      • S(A);
      • Threat
        • R1(C)
      • Vars
        • B(i);P_PINP(F),SBLOCK::B(G)
      • Refutation
        • B(i);
    • Try
      • R(D);CHECK
      • Refutation
        • P(d);XR(D)
    • Try
      • R(D);CHECK
      • Vars
        • B(i);P_PINP(F),SBLOCK,XR(D)::B(G)
      • Refutation
        • K(c);P-FLIGHT,XR(D)
  • Actual
    • S(A);
    • Threat
      • B(G)
    • Vars
      • S(g);N_GUARD,XP(F)::S(A)
      • S(a);SBLOCK::R1(C)
      • S(a);SBLOCK,S_CUTB(i)::S(E)
      • P(e);OGATEB::B(G)
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