MESON Chess Problem Database

Problem Display
PID: 139973 (8/2p5/1p1Pp3/2k5/6RB/1P2K3/n7/3R1B1Q w - - 0 1)

Hoek, Willem

Probleemblad, 1975

8/2p5/1p1Pp3/2k5/6RB/1P2K3/n7/3R1B1Q

#2

8 + 5

5454 Near Snap 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Sc1
      • 2.b4#
    • 1...Sc3
      • 2.b4#
    • 1...e5
      • 2.Qd5#
  • Tries
    • 1.Be7?
      • threat
        • 2.dxc7#
        • 2.d7#
      • 1...cxd6
        • 2.Bxd6#
      • 1...c6
        • 2.d7#
      • 1...b5!
    • 1.dxc7?
      • threat
        • 2.Be7#
        • 2.c8Q#
        • 2.c8R#
      • 1...Sb4
        • 2.Be7#
      • 1...Sc1
        • 2.Be7#
        • 2.b4#
        • 2.c8Q#
        • 2.c8R#
      • 1...Sc3
        • 2.Be7#
        • 2.b4#
        • 2.c8Q#
        • 2.c8R#
      • 1...e5
        • 2.Be7#
        • 2.Qd5#
        • 2.c8Q#
        • 2.c8R#
      • 1...b5!
  • Keys
    • 1.Bf2!
      • 1...cxd6
        • 2.Kd2#
      • 1...b5
        • 2.Ke2#
      • 1...Sc1
        • 2.b4#
      • 1...Sc3
        • 2.b4#
      • 1...Sb4
        • 2.Kf4#
      • 1...e5
        • 2.Qd5#
      • 1...c6
        • 2.Kf3#

This anticipates 209473(1991)

This is after

After Taverner and Stocchi.

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • S(a);N_GUARD::P(D)
    • P(d);N_GUARD::QAR1(C)
  • Tries
    • Try
      • B(G);
      • Threat
        • DUALS(2)
      • Vars
        • P(e);OGATE,P_SPINP(e),XP(H)::B(G),XP(e)
        • P(e);::B(G)+P(H)
      • Refutation
        • P(c);
    • Try
      • P(H);XP(e)
      • Threat
        • DUALS(3)
      • Vars
        • S(a);::B(G)
      • Refutation
        • P(c);
  • Actual
    • B(G);
    • Vars
      • P(e);SBLOCK,XP(H)::B(G)+K(E)
      • P(c);SBLOCK::B(G)+K(E)
      • S(a);N_GUARD::P(D)
      • S(a);SBLOCK::B(G)+K(E)
      • P(d);N_GUARD::QAR1(C)
      • P(e);SBLOCK::B(G)+K(E)
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