MESON Chess Problem Database

Problem Display
PID: 148466 (6Q1/B1p5/1nN2Pp1/1B2p1K1/1p1pk3/2b4R/2brpP2/1N6 w - - 0 1)

Boy, Claude

diagrammes, 1974

6Q1/B1p5/1nN2Pp1/1B2p1K1/1p1pk3/2b4R/2brpP2/1N6

#2

9 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Ba1
      • 2.Sxd2#
    • 1...Bb2
      • 2.Sxd2#
    • 1...Sd5
      • 2.Qxg6#
    • 1...d3
      • 2.Re3#
  • Tries
    • 1.Sxc3+?
      • 1...dxc3
        • 2.Re3#
      • 1...bxc3!
    • 1.Bxe2?
      • threat
        • 2.Rh4#
      • 1...Sd5
        • 2.Qxg6#
      • 1...Rxe2!
  • Keys
    • 1.Sxd4!
      • threat
        • 2.Rh4#
      • 1...Kxd4
        • 2.Qc4#
      • 1...Rxd4
        • 2.Re3#
      • 1...Bxd4
        • 2.Sxd2#
      • 1...exd4
        • 2.Qe6#
      • 1...Sc4
        • 2.Bc6#
      • 1...Sd5
        • 2.Qxg6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 3
  • Sets
    • B(d);N_GUARD::S(A),XR(b)
    • S(i);SBLOCK::QAB(I),XP(j)
    • P(f);N_GUARD::R1(C)
  • Tries
    • Try
      • S(A);CHECK,XB(d)
      • Vars
        • P(f);XS(A)::R1(C)
      • Refutation
        • P(e);XS(A)
    • Try
      • B(D);XP(c)
      • Threat
        • R(C)
      • Vars
        • S(i);SBLOCK::QAB(I),XP(j)
      • Refutation
        • R(b);XB(D)
  • Actual
    • S(F);XP(f)
    • Threat
      • R(C)
    • Vars
      • K(g);OGATEB,P-FLIGHT,P_SPINS(i),XS(F)::QAR1(I)
      • R(b);SBLOCK,XS(F)::R1(C)
      • B(d);N_GUARD,SBLOCK,XS(F)::S(A),XR(b)
      • P(h);OGATEB,SBLOCK,XS(F)::QAR2(I)
      • S(i);N_GUARD::B(D)
      • S(i);SBLOCK::QAB(I),XP(j)
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Developed and maintained by Brian Stephenson.
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