MESON Chess Problem Database

Problem Display
PID: 148472 (1B1k1r2/3r1bN1/1Np1pP2/3P3Q/8/1K6/8/3R4 w - - 0 1)

Boy, Claude

Comm., diagrammes 02. TT, 1974-1975

1B1k1r2/3r1bN1/1Np1pP2/3P3Q/8/1K6/8/3R4

#2

8 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Be8
      • 2.Sxe6#
  • Tries
    • 1.dxc6?
      • threat
        • 2.Rxd7#
        • 2.c7#
      • 1...Rd3+
        • 2.Rxd3#
      • 1...Rxd1
        • 2.Qxd1#
        • 2.c7#
      • 1...Rd2
        • 2.Rxd2#
        • 2.c7#
      • 1...Rd4
        • 2.Rxd4#
        • 2.c7#
      • 1...Rd5
        • 2.c7#
      • 1...Rd6
        • 2.Rxd6#
        • 2.c7#
      • 1...Be8
        • 2.Sxe6#
        • 2.c7#
      • 1...e5+!
  • Keys
    • 1.dxe6!
      • threat
        • 2.Rxd7#
      • 1...Rd3+
        • 2.Rxd3#
      • 1...Bxe6+
        • 2.Sxe6#
      • 1...Rxd1
        • 2.Qxd1#
      • 1...Rd2
        • 2.Rxd2#
      • 1...Rd4
        • 2.Rxd4#
      • 1...Rd5
        • 2.e7#
      • 1...Rd6
        • 2.Rxd6#
      • 1...Be8
        • 2.e7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • B(d);N_GUARD::S(G),XP(b)
  • Tries
    • Try
      • P(C);P_PINR(c),XP(a)
      • Threat
        • DUALS(2)
      • Vars
        • R(c);CHECK,OGATEB::R(A),XR(c)
        • R(c);::P(C)
      • Refutation
        • P(b);CHECK
  • Actual
    • P(C);P_PINR(c),P_SPINP(C),XP(b)
    • Threat
      • R1(A),XR(c)
    • Vars
      • R(c);CHECK,OGATEB::R(A),XR(c)
      • B(d);CHECK,XP(C)::S(G),XB(d)
      • R(c);N_SPINR(c),OGATE,XR(A)::QAB(D),XR(c)
      • R(c);OGATEB::R(A),XR(c)
      • R(c);N_PINP(C)::P(C)
      • B(d);N_PINP(C)::P(C)
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