MESON Chess Problem Database

Problem Display
PID: 115889 (8/2R1Q3/8/n7/2Np4/1Nk5/2Pn4/3K4 w - - 0 1)

Fleck, Ferenc

Paros, Gyorgy

Zaszlonk, 1937

8/2R1Q3/8/n7/2Np4/1Nk5/2Pn4/3K4

#2

6 + 4

6490 yacpdb 2009
5454 Near Snap 2015

SOLUTION

  • SOUND
  • Tries
    • 1.Sbxd2?
      • threat
        • 2.Sb1#
        • 2.Se4#
      • 1...Sxc4
        • 2.Qa3#
      • 1...Sc6
        • 2.Qa3#
      • 1...d3!
  • Keys
    • 1.Qa3!
      • threat
        • 2.Qxa5#
      • 1...Sdxb3
        • 2.Sxa5#
      • 1...Sdxc4
        • 2.Sxa5#
      • 1...Saxb3
        • 2.Sxd2#
      • 1...Saxc4
        • 2.Sxd2#
      • 1...Sc6
        • 2.Sbxd2#
      • 1...Sb7
        • 2.Sbxd2#

Anticipated by 114866(1919), 238284(1934)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(C);XS(a)
      • Threat
        • DUALS(2)
      • Vars
        • S(d);N_GUARD,P_SPINS(d),XS(D)::QAR2(F)
        • S(d);N_GUARD::QAR2(F)
      • Refutation
        • P(c);
  • Actual
    • Q(F);
    • Threat
      • QAB(F),XS(d)
    • Vars
      • S(a);N_GUARD,P_SPINS(a),XS(C)::R(E)+S(D),XS(d)
      • S(a);N_GUARD,P_SPINS(a),XS(D)::QAR(F)+S(C),XS(d)
      • S(d);N_GUARD,P_SPINS(d),XS(C)::R(E)+S(D),XS(a)
      • S(d);N_GUARD,P_SPINS(d),XS(D)::QAR(F)+S(C),XS(a)
      • S(d);N_GUARD::QAR(F)+S(C),XS(a)
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