MESON Chess Problem Database

Problem Display
PID: 186331 (2B2b2/3Np3/R7/2B2k2/4N2R/Kp5n/8/1Qr5 w - - 0 1)

Visbeen, Frank

Probleemblad, 1954

2B2b2/3Np3/R7/2B2k2/4N2R/Kp5n/8/1Qr5

#2

8 + 6

15601 Albrecht-Leiss-Degener Collection 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Sg5
      • 2.Sg3#
    • 1...e5
      • 2.Sb8#
      • 2.Sxf8#
      • 2.Rf6#
  • Tries
    • 1.Sd6+?
      • 1...Ke6
        • 2.Qe4#
        • 2.Qf5#
      • 1...Kg5!
    • 1.Bxe7?
      • threat
        • 2.Sg3#
        • 2.Rf6#
      • 1...Rc6
        • 2.Sec5#
      • 1...Bg7
        • 2.Sg3#
      • 1...Bxe7+!
    • 1.Qxc1?
      • threat
        • 2.Sg3#
      • 1...Sf4
        • 2.Rxf4#
        • 2.Qxf4#
      • 1...e6!
  • Keys
    • 1.Be3!
      • threat
        • 2.Sg3#
      • 1...e5+
        • 2.Sdc5#
      • 1...e6+
        • 2.Sd6#
      • 1...Rc6
        • 2.Sec5#
      • 1...Sf4
        • 2.Rxf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • S(c);SBLOCK::QAB(A)+S(C),DCHECK
  • Tries
    • Try
      • S(C);CHECK
      • Refutation
        • K(d);P-FLIGHT
    • Try
      • B(E);P_SPINB(E),XP(e)
      • Threat
        • DUALS(2)
      • Vars
        • R(a);N_GUARD::QAB(A)+S(C)
        • B(f);N_PINB(E)::QAB(A)+S(C),DCHECK
      • Refutation
        • B(f);CHECK,XB(E)
    • Try
      • Q(A);XR(a)
      • Threat
        • S(C)
      • Refutation
        • P(e);P_PINB(E)
  • Actual
    • B(E);
    • Threat
      • QAB(A)+S(C),DCHECK
    • Vars
      • P(e);CHECK,N_GUARD,SBLOCK::B(H)+S(G)
      • P(e);CHECK,SBLOCK::QAB(A)+S(C),DCHECK
      • R(a);N_GUARD::QAB(A)+S(C)
      • S(c);N_GUARD::R1(D),XS(c)
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