MESON Chess Problem Database

Problem Display
PID: 185890 (1r6/4p3/8/brP4R/B1k1K1P1/B5R1/2p2N1Q/5N2 w - - 0 1)

Petite, Efren

Chess, 1957

1r6/4p3/8/brP4R/B1k1K1P1/B5R1/2p2N1Q/5N2

#2

10 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Rb4
      • 2.Sd2#
    • 1...Rxc5
      • 2.Rxc5#
    • 1...Bd2
      • 2.Sxd2#
    • 1...Bc3
      • 2.Se3#
    • 1...Bb4
      • 2.Bb3#
    • 1...Bb6
      • 2.Sd2#
    • 1...Bc7
      • 2.Sd2#
    • 1...Bd8
      • 2.Sd2#
  • Tries
    • 1.Rc3+?
      • 1...Bxc3
        • 2.Se3#
      • 1...Kxc3!
  • Keys
    • 1.Sd3!
      • threat
        • 2.Se5#
      • 1...Kc3
        • 2.Sb2#
        • 2.Se5#
        • 2.Qxc2#
      • 1...Rxc5
        • 2.Rxc5#
      • 1...Rb4
        • 2.Qxc2#
      • 1...Bc3
        • 2.Se3#
      • 1...Bb4
        • 2.Sb2#
      • 1...Bc7
        • 2.Qxc2#
      • 1...e5
        • 2.Sxe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 1
    • REMOVED MATES = 3
  • Sets
    • R(d);S_CUTB(c)::S(A)
    • R(d);OGATE,XP(I)::R1(J),XR(d)
    • B(c);N_GUARD::S(A),XB(c)
    • B(c);SBLOCK::S(A)
    • B(c);S_CUTR(d)::B(F)
    • B(c);N_GUARD::S(A)
  • Tries
    • Try
      • R(E);CHECK
      • Vars
        • B(c);SBLOCK,XR(E)::S(A)
      • Refutation
        • K(b);P-FLIGHT,XR(E)
  • Actual
    • S(B);
    • Threat
      • S(B)
    • Vars
      • R(d);OGATE,XP(I)::R1(J),XR(d)
      • R(d);S_CUTB(c)::QAR2(C),XP(a)
      • B(c);SBLOCK::S(A)
      • B(c);S_CUTR(d)::S(B)
      • B(c);N_GUARD::QAR2(C),XP(a)
      • P(e);::S(B),XP(e)
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