MESON Chess Problem Database

Problem Display
PID: 142747 (8/6pQ/2K5/pN1ppnP1/Rb2kp1R/2pr4/6PB/1B3N2 w - - 0 1)

Lepage, Roger

diagrammes, 1973

8/6pQ/2K5/pN1ppnP1/Rb2kp1R/2pr4/6PB/1B3N2

#2

10 + 10

SOLUTION

  • SOUND
  • Tries
    • 1.Rxb4+?
      • 1...d4
        • 2.Sxc3#
        • 2.Sd6#
      • 1...axb4!
    • 1.Rh3?
      • threat
        • 2.Bxd3#
      • 1...f3
        • 2.Rh4#
        • 2.gxf3#
      • 1...c2!
  • Keys
    • 1.Bg1!
      • threat
        • 2.Sg3#
        • 2.Sxc3#
        • 2.Sd6#
      • 1...c2
        • 2.Sd6#
      • 1...d4
        • 2.Sg3#
      • 1...g6
        • 2.Sxc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(E);CHECK,XB(c)
      • Refutation
        • P(f);XR(E)
    • Try
      • R(F);N_PINP(e)
      • Threat
        • B(A),XR(b)
      • Refutation
        • P(a);N_SPINR(b)
  • Actual
    • B(D);
    • Threat
      • DUALS(3)
    • Vars
      • P(a);N_SPINR(b)::S(G)
      • P(g);N_SPINB(c)::S(B)
      • P(j);N_SPINS(i)::S(G),XP(a)
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