MESON Chess Problem Database

Problem Display
PID: 57518 (8/1Nrr4/3PB2P/4p2K/4k3/2P1p1P1/p3Q3/1b2n3 w - - 0 1)

Cavrel, Edouard

Het Belgisch Schaakbord (L'Echiquier Belge), 1953

8/1Nrr4/3PB2P/4p2K/4k3/2P1p1P1/p3Q3/1b2n3

#2

8 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Rc5
      • 2.Sxc5#
    • 1...Rxd6
      • 2.Sxd6#
    • 1...Bd3
      • 2.Qg4#
    • 1...Sd3
      • 2.Qg2#
  • Tries
    • 1.dxc7?
      • threat
        • 2.Sc5#
      • 1...Rxc7
        • 2.Sd6#
      • 1...Sd3
        • 2.Qg2#
      • 1...Rd5!
  • Keys
    • 1.Qd1!
      • threat
        • 2.Qd5#
      • 1...Rxd6
        • 2.Sxd6#
      • 1...e2
        • 2.Qxe2#
      • 1...Rc5
        • 2.Sxc5#
      • 1...Bd3
        • 2.Qg4#
      • 1...Sd3
        • 2.Qh1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • R(g);N_GUARD::S(H),XR(g)
    • R(h);XP(E)::S(H),XR(h)
    • B(a);SBLOCK::QAR2(A)
    • S(b);N_GUARD,SBLOCK::QAB(A)
  • Tries
    • Try
      • P(E);XR(g)
      • Threat
        • S(H)
      • Vars
        • R(h);N_GUARD,XP(E)::S(H)
        • S(b);N_GUARD,SBLOCK::QAB(A)
      • Refutation
        • R(h);
  • Actual
    • Q(A);N_PINP(d)
    • Threat
      • QAB1(A)
    • Vars
      • R(h);XP(E)::S(H),XR(h)
      • P(d);OGATEB::QAR2(A),XP(d)
      • R(g);N_GUARD::S(H),XR(g)
      • B(a);SBLOCK::QAR2(A)
      • S(b);OGATE,SBLOCK::QAB(A)
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Developed and maintained by Brian Stephenson.
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