MESON Chess Problem Database

Problem Display
PID: 263982 (RR5K/8/2p5/2Qn4/1n6/1p1B4/1k1N4/2N5 w - - 0 1)

Swane, Jan Arnold Willem

3rd Prize, Tijdschrift vd KNSB, 1953

RR5K/8/2p5/2Qn4/1n6/1p1B4/1k1N4/2N5

#2

7 + 5

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Sa2
      • 2.Rxa2#
    • 1...Sc2
      • 2.Qxc2#
    • 1...Sxd3
      • 2.Sxd3#
      • 2.Ra2#
      • 2.Rxb3#
  • Tries
    • 1.Sc4+?
      • 1...Kxc1
        • 2.Ra1#
        • 2.Qg1#
      • 1...Kc3!
    • 1.Se4?
      • 1...Sxd3
        • 2.Rxb3#
      • 1...Sa2
        • 2.Rxa2#
      • 1...Sc2
        • 2.Qxc2#
      • 1...Sc3
        • 2.Qxc3#
      • 1...Se3
        • 2.Qc3#
      • 1...Sf4
        • 2.Qc3#
      • 1...Sb6
        • 2.Qc3#
      • 1...Sf6
        • 2.Qc3#
      • 1...Sc7
        • 2.Qc3#
      • 1...Se7
        • 2.Qc3#
      • 1...Sa6!
  • Keys
    • 1.Sb1!
      • 1...Sxd3
        • 2.Rxb3#
      • 1...Sa2
        • 2.Rxa2#
      • 1...Sc2
        • 2.Qxc2#
      • 1...Sa6
        • 2.Qa3#
      • 1...Sc3
        • 2.Qxc3#
      • 1...Se3
        • 2.Qc3#
      • 1...Sf4
        • 2.Qc3#
      • 1...Sb6
        • 2.Qc3#
      • 1...Sf6
        • 2.Qc3#
      • 1...Sc7
        • 2.Qc3#
      • 1...Se7
        • 2.Qc3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
    • S(c);N_GUARD,P_SPINP(b)::R1(E),XS(c)
    • S(c);N_GUARD,P_SPINP(b)::QAR1(D),XS(c)
  • Tries
    • Try
      • S(B);CHECK
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(B);
      • Vars
        • S(c);OGATE,P_SPINP(b),XB(C)::R1(F),XP(b)
        • S(c);N_GUARD,P_SPINP(b)::R1(E),XS(c)
        • S(c);N_GUARD,P_SPINP(b)::QAR1(D),XS(c)
        • S(d);N_GUARD::QAB1(D),XS(d)
        • S(d);N_GUARD::QAB1(D)
      • Refutation
        • S(c);P_SPINP(b)
  • Actual
    • S(B);
    • Vars
      • S(c);OGATE,P_SPINP(b),XB(C)::R1(F),XP(b)
      • S(c);N_GUARD,P_SPINP(b)::R1(E),XS(c)
      • S(c);N_GUARD,P_SPINP(b)::QAR1(D),XS(c)
      • S(c);OGATE,P_SPINP(b)::QAB1(D)
      • S(d);N_GUARD::QAB1(D),XS(d)
      • S(d);N_GUARD::QAB1(D)
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