MESON Chess Problem Database

Problem Display
PID: 79383 (2n5/1pp1pp1K/1RN1PPpR/Q2N1pk1/2p4p/4P3/4B3/B7 w - - 0 1)

Haring, Jacobus

The Tablet, 1964

(First published on Sat Oct 31 1964)

2n5/1pp1pp1K/1RN1PPpR/Q2N1pk1/2p4p/4P3/4B3/B7

#2

11 + 10

15239 Valois Notebooks 2017

SOLUTION

  • SOUND
  • Sets
    • 1...f4
      • 2.Sdb4#
      • 2.Sxf4#
      • 2.Sxc7#
      • 2.Sdxe7#
    • 1...exf6
      • 2.Bxf6#
    • 1...fxe6
      • 2.Rxg6#
  • Tries
    • 1.Sf4?
      • threat
        • 2.Sh3#
      • 1...h3
        • 2.Sxh3#
      • 1...c3!
    • 1.Sd8?
      • threat
        • 2.Sxf7#
      • 1...fxe6
        • 2.Sxe6#
        • 2.Sf7#
        • 2.Rxg6#
      • 1...f4
        • 2.Sxc7#
      • 1...Sd6!
    • 1.Qe1?
      • threat
        • 2.Qxh4#
        • 2.Qg1#
      • 1...h3
        • 2.Qg3#
        • 2.Qh4#
        • 2.Qg1#
      • 1...f4!
    • 1.exf7?
      • threat
        • 2.Rxg6#
      • 1...f4
        • 2.Sdxe7#
      • 1...h3!
    • 1.fxe7?
      • threat
        • 2.Bf6#
      • 1...f4
        • 2.Sf6#
      • 1...f6
        • 2.Bxf6#
        • 2.Rxg6#
      • 1...c3!
  • Keys
    • 1.Rb1!
      • threat
        • 2.Rg1#
      • 1...f4
        • 2.Sb6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • P(h);OGATE,XP(I)::B(A),XP(h)
    • P(i);N_GUARD,XP(H)::R1(J),XP(e)
  • Tries
    • Try
      • S(E);P_PINP(c)
      • Threat
        • S(E)
      • Vars
        • P(b);::S(E),XP(b)
      • Refutation
        • P(a);
    • Try
      • S(G);
      • Threat
        • S(G),XP(i)
      • Vars
        • P(c);::QAR(D)+S(E),XP(g)
      • Refutation
        • S(j);
    • Try
      • Q(D);
      • Threat
        • DUALS(2)
      • Refutation
        • P(c);
    • Try
      • P(H);XP(i)
      • Threat
        • R1(J),XP(e)
      • Vars
        • P(c);::QAR(D)+S(E),XP(h)
      • Refutation
        • P(b);
    • Try
      • P(I);XP(h)
      • Threat
        • B(A)
      • Vars
        • P(c);::QAR(D)+S(E)
      • Refutation
        • P(a);
  • Actual
    • R(F);
    • Threat
      • R(F)
    • Vars
      • P(c);::QAR(D)+S(E)
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