MESON Chess Problem Database

Problem Display
PID: 108301 (3n2r1/3N2R1/8/1K3krn/2Q4P/3p1Nb1/2B4B/1b3R2 w - - 0 1)

Fleck, Ferenc

Gyorsszerzo verseny, 1986

3n2r1/3N2R1/8/1K3krn/2Q4P/3p1Nb1/2B4B/1b3R2

#2

9 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rg4
      • 2.Qxg4#
    • 1...Re8
      • 2.Rxg5#
    • 1...Rf8
      • 2.Rxg5#
    • 1...Rh8
      • 2.Rxg5#
    • 1...Ba2
      • 2.Bxd3#
    • 1...Bxh4
      • 2.Sxh4#
  • Tries
    • 1.Sd4+?
      • 1...Ke4+
        • 2.Sf5#
      • 1...Kg4+!
  • Keys
    • 1.Qxd3+!
      • 1...Kf4+
        • 2.Sfe5#
      • 1...Kg4+
        • 2.Qf5#
      • 1...Ke6+
        • 2.Sxg5#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 6
  • Sets
    • R(e);N_GUARD::QAB1(E),XR(e)
    • R(h);N_GUARD::R1(I),XR(e)
    • B(a);N_GUARD::B(B),XP(b)
    • B(c);XP(F)::R(A)+S(D),DCHECK,XB(c)
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • K(d);CHECK,S_FLIGHT::QAR(E)+S(D)
      • Refutation
        • K(d);CHECK,N_SPINP(b),P_SPINR(e),S_FLIGHT
  • Actual
    • Q(E);CHECK,XP(b)
    • Vars
      • K(d);CHECK,P-FLIGHT,P_SPINB(c)::R(A)+S(D)
      • K(d);CHECK,P_SPINR(e),S_FLIGHT::QAB1(E)
      • K(d);CHECK,S_FLIGHT::S(D),XR(e)
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