MESON Chess Problem Database

Problem Display
PID: 9903 (4K3/7B/1N1B1P2/4Nr2/Q2nkn1R/1P6/4PP2/4R3 w - - 0 1)

Haring, Jacobus

3rd Prize, Problem (Zagreb), 1960

4K3/7B/1N1B1P2/4Nr2/Q2nkn1R/1P6/4PP2/4R3

#2

12 + 4

3749 FIDE Album (1959-1961) 1966

SOLUTION

  • SOUND
  • Tries
    • 1.Sg4?
      • threat
        • 2.f3#
      • 1...Sxe2
        • 2.Se5#
      • 1...Sg6!
    • 1.Sg6?
      • 1...Re5+
        • 2.Sxe5#
      • 1...Ra5
        • 2.Se5#
        • 2.Rxf4#
      • 1...Rb5
        • 2.Se5#
        • 2.Rxf4#
      • 1...Rc5
        • 2.Se5#
        • 2.Rxf4#
      • 1...Rd5
        • 2.Se5#
        • 2.Rxf4#
      • 1...Rg5
        • 2.Rxf4#
      • 1...Rh5
        • 2.Rxf4#
      • 1...Rxf6!
  • Keys
    • 1.Sec4!
      • threat
        • 2.Sd2#
        • 2.Rxf4#
      • 1...Sxe2
        • 2.Se5#
      • 1...Se6
        • 2.Sd2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(G);
      • Threat
        • P(C)
      • Vars
        • S(c);N_SPINS(a),P_SPINS(c),XP(B)::R(F)+S(G)
      • Refutation
        • S(c);N_SPINR(d)
    • Try
      • S(G);N_PINR(d)
      • Vars
        • R(d);CHECK::B(K)+S(G),XR(d)
        • R(d);N_GUARD::R1(F),XS(c)
      • Refutation
        • R(d);XP(J)
  • Actual
    • S(G);N_PINS(a),P_PINS(c)
    • Threat
      • DUALS(2)
    • Vars
      • S(a);N_SPINS(c),P_SPINS(a),XP(B)::QAR(E)+S(G)
      • S(a);::QAR(E)+S(G),DCHECK
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