MESON Chess Problem Database

Problem Display
PID: 120745 (3R4/7B/8/8/1QN5/Br5r/q1PPNR1P/3k1K2 w - - 0 1)

Szoghy, Jozsef

Maroczy MT, 1953

3R4/7B/8/8/1QN5/Br5r/q1PPNR1P/3k1K2

#2

11 + 4

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rbe3
      • 2.dxe3#
    • 1...Rc3
      • 2.dxc3#
  • Tries
    • 1.Sc3+?
      • 1...Rhxc3
        • 2.dxc3#
      • 1...Rbxc3!
  • Keys
    • 1.d3!
      • threat
        • 2.Qd2#
      • 1...Kxc2
        • 2.Sc3#
      • 1...Qxc2
        • 2.Qe1#
      • 1...Rbxd3
        • 2.Sc3#
      • 1...Rxb4
        • 2.Sc3#
      • 1...Rhxd3
        • 2.Se3#
      • 1...Rc3
        • 2.Sxc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 2
  • Sets
    • R(c);OGATE::R(K)+P(C),XR(c)
    • R(d);OGATE::R(K)+P(C),XR(d)
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • R(d);OGATE,XS(D)::R(K)+P(C),XR(d)
      • Refutation
        • R(c);XS(D)
  • Actual
    • P(C);
    • Threat
      • QAR1(H)
    • Vars
      • K(a);S_FLIGHT,XP(B)::R(E)+S(D)
      • Q(b);SBLOCK,XP(B)::QAR1(H)
      • R(c);N_GUARD,P_SPINR(c),XP(C)::S(D)
      • R(c);N_GUARD,XQ(H)::S(D)
      • R(d);N_GUARD,P_SPINR(d),XP(C)::S(I)
      • R(c);N_GUARD::S(D),XR(c)
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