MESON Chess Problem Database

Problem Display
PID: 10389 (2K1R1nk/1ppP4/1q2N3/6pB/3r4/7N/1r6/BQ5R w - - 0 1)

Lipton, Michael

Die Schwalbe, 1964

2K1R1nk/1ppP4/1q2N3/6pB/3r4/7N/1r6/BQ5R

#2

9 + 8

3174 The Two-move Chess Problem Tradition and Development 1966
3747 FIDE Album (1962-1964) 1968

SOLUTION

  • SOUND
  • Tries
    • 1.Bf7?
      • threat
        • 2.Rxg8#
      • 1...Rxb1
        • 2.Sg1#
      • 1...Rc2
        • 2.Sf2#
      • 1...Re4
        • 2.Shf4#
      • 1...Rd3!
    • 1.Qg6?
      • threat
        • 2.Rxg8#
        • 2.Qh6#
        • 2.Qg7#
        • 2.Qxg8#
      • 1...Rxd7
        • 2.Rxg8#
        • 2.Qxg8#
      • 1...Qxe6!
  • Keys
    • 1.Shxg5!
      • threat
        • 2.Sf7#
        • 2.Qh7#
      • 1...Qxe6
        • 2.Qh7#
      • 1...Rxb1
        • 2.Bd1#
      • 1...Rxd7
        • 2.Bf7#
      • 1...Rc2
        • 2.Be2#
      • 1...Rf2
        • 2.Qh7#
      • 1...Rd3
        • 2.Bf3#
      • 1...Re4
        • 2.Bg4#
      • 1...Rf4
        • 2.Bg4#
        • 2.Qh7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(E);
      • Threat
        • R1(I),XS(g)
      • Vars
        • R(a);N_GUARD,P_SPINR(b),XQ(B)::R(C)+S(D)
        • R(a);P_SPINR(b)::R(C)+S(D)
        • R(b);P_SPINR(a)::R(C)+S(D)
      • Refutation
        • R(b);P_SPINR(a)
    • Try
      • Q(B);
      • Threat
        • DUALS(4)
      • Refutation
        • Q(d);P_PINP(G),XS(F)
  • Actual
    • S(D);XP(c)
    • Threat
      • DUALS(2)
    • Vars
      • Q(d);P_PINP(G),XS(F)::QAR1(B)
      • R(a);N_GUARD,P_SPINR(b),XQ(B)::R(C)+B(E)
      • R(b);N_GUARD,P_SPINR(a),XP(G)::R(C)+B(E)
      • R(a);P_SPINR(b)::R(C)+B(E)
      • R(a);P_SPINR(b)::QAR1(B)
      • R(b);N_GUARD,P_SPINR(a)::R(C)+B(E)
      • R(b);P_SPINR(a)::R(C)+B(E)
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