MESON Chess Problem Database

Problem Display
PID: 9873 (4N3/7B/2P1PR2/pP1p4/K1pk4/N5Q1/2P2R1P/8 w - - 0 1)

Morse, Christopher Jeremy

1st Place, Match: Great Britain - Israel, 1960-1961

4N3/7B/2P1PR2/pP1p4/K1pk4/N5Q1/2P2R1P/8

#2

12 + 4

3749 FIDE Album (1959-1961) 1966
3174 The Two-move Chess Problem Tradition and Development 1966
15 British Chess Magazine 2016

SOLUTION

  • SOUND
  • Tries
    • 1.Sb1?
      • 1...c3
        • 2.Qxc3#
      • 1...Kc5!
    • 1.R2f4+?
      • 1...Ke5
        • 2.Rxc4#
        • 2.Re4#
        • 2.Rg4#
        • 2.Rh4#
        • 2.Qe1#
        • 2.Qe3#
        • 2.Qg5#
      • 1...Kc5!
    • 1.R2f5?
      • 1...Ke4
        • 2.Qf4#
        • 2.Qe5#
      • 1...Kc5
        • 2.Qf2#
        • 2.Qg1#
        • 2.Qe3#
      • 1...c3!
    • 1.R6f4+?
      • 1...Ke5
        • 2.Re2#
        • 2.Re4#
        • 2.Qe3#
      • 1...Kc5!
    • 1.R6f5?
      • 1...Ke4
        • 2.R2f4#
        • 2.Qf4#
        • 2.Qe5#
      • 1...Kc5
        • 2.Qe3#
      • 1...c3!
    • 1.Qg7?
      • 1...Kc3
        • 2.R6f3#
      • 1...Ke3
        • 2.R6f3#
      • 1...Kc5
        • 2.Qa7#
      • 1...Ke5
        • 2.Rh6#
      • 1...c3!
  • Keys
    • 1.Qg1!
      • 1...Kc3
        • 2.Qa1#
      • 1...Ke3
        • 2.Rg2#
      • 1...Kc5
        • 2.R2f5#
      • 1...Ke5
        • 2.Re2#
      • 1...c3
        • 2.Re2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(D);
      • Vars
        • P(a);::QAB1(E),XP(a)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • R(B);CHECK
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • R(B);
      • Refutation
        • P(a);
    • Try
      • R(J);CHECK
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • R(J);
      • Vars
        • K(b);P_SPINP(d),S_FLIGHT::QAB(E)
      • Refutation
        • P(a);
    • Try
      • Q(E);
      • Vars
        • K(b);S_FLIGHT::QAB(E)+R(J),DCHECK
        • K(b);S_FLIGHT::R1(J)
        • K(b);S_FLIGHT::QAB(E)
        • K(b);S_FLIGHT::QAB(E)+R(J)
      • Refutation
        • P(a);
  • Actual
    • Q(E);
    • Vars
      • K(b);S_FLIGHT::QAB(E)
      • K(b);S_FLIGHT::QAB(E)+R(B)
      • K(b);S_FLIGHT::R(B)
      • P(a);SBLOCK::QAB(E)+R(B)
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