MESON Chess Problem Database

Problem Display
PID: 142380 (4b2K/1QpPp3/2rNk1N1/R1n3PB/4p1P1/4P3/8/8 w - - 0 1)

Melvin, Herbert A ('Hamel' or Zaak, HA)

1st Prize, Hobbies, 1905

(First published on Sat Sep 23 1905)

4b2K/1QpPp3/2rNk1N1/R1n3PB/4p1P1/4P3/8/8

#2

10 + 7

14867 BCPS Library 2011

SOLUTION

  • SOUND
  • Tries
    • 1.dxe8Q?
      • 1...Kxd6
        • 2.Qbxc6#
        • 2.Qexc6#
      • 1...Rxd6
        • 2.Qxe7#
      • 1...Sxb7
        • 2.Qxe7#
      • 1...cxd6
        • 2.Qg8#
      • 1...Ra6
        • 2.Qxe7#
      • 1...Rb6
        • 2.Qxe7#
      • 1...Sb3
        • 2.Qxe7#
      • 1...Sd3
        • 2.Qxe7#
      • 1...Sa4
        • 2.Qxe7#
      • 1...Sa6
        • 2.Qxe7#
      • 1...Sd7
        • 2.Qxe7#
      • 1...Kd5!
  • Keys
    • 1.Sf7!
      • 1...Kd5
        • 2.Qb3#
      • 1...Kxd7
        • 2.Sf8#
      • 1...Kxf7
        • 2.d8S#
      • 1...Bxd7
        • 2.Sf4#
      • 1...Bxf7
        • 2.Qxc6#
      • 1...Sxb7
        • 2.Sf8#
      • 1...Sxd7
        • 2.Sf4#
      • 1...Ra6
        • 2.Sf8#
      • 1...Rb6
        • 2.Sf8#
      • 1...Rd6
        • 2.Sf8#
      • 1...Sb3
        • 2.Sf8#
      • 1...Sd3
        • 2.Sf8#
      • 1...Sa4
        • 2.Sf8#
      • 1...Sa6
        • 2.Sf8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 14
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • P(I);P_PINP(f),XB(g)
      • Vars
        • R(c);XS(F)::QAR1(I),XP(f)
        • S(b);XQ(H)::QAR1(I),XP(f)
        • P(e);SBLOCK,XS(F)::QAB(I)
        • R(c);::QAR1(I),XP(f)
        • S(b);::QAR1(I),XP(f)
      • Refutation
        • K(d);N_SPINP(f),P_SPINR(c),P_SPINS(b),S_FLIGHT
  • Actual
    • S(F);
    • Vars
      • K(d);P_SPINR(c),P_SPINS(b),S_FLIGHT::QAB(H)
      • K(d);P_SPINP(e),S_FLIGHT,XP(I)::S(G)
      • K(d);S_FLIGHT,XS(F)::P=S
      • B(g);SBLOCK,XP(I)::S(G)
      • B(g);SBLOCK,XS(F)::QAR2(H),XR(c)
      • S(b);XQ(H)::S(G)
      • S(b);SBLOCK,XP(I)::S(G)
      • R(c);::S(G)
      • S(b);::S(G)
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