MESON Chess Problem Database

Problem Display
PID: 69789 (5RN1/8/q7/1r2Q3/R2BB1kP/1p4P1/3b2PK/3b1r1n w - - 0 1)

Lacny, Ludovit

1st Prize, The Problemist, 1975

5RN1/8/q7/1r2Q3/R2BB1kP/1p4P1/3b2PK/3b1r1n

#2

10 + 8

SOLUTION

  • SOUND
  • Tries
    • 1.Be3?
      • threat
        • 2.Bf3#
      • 1...Qxa4
        • 2.Sh6#
      • 1...Rf4
        • 2.Rxf4#
      • 1...Rf3
        • 2.Bxf3#
      • 1...Rb4
        • 2.Qg5#
      • 1...Bf3
        • 2.Bxf3#
        • 2.Rf4#
      • 1...Bb4!
    • 1.Qe6+?
      • 1...Kh5
        • 2.Bg6#
      • 1...Rff5
        • 2.Sf6#
      • 1...Rbf5
        • 2.Sf6#
      • 1...Qxe6!
  • Keys
    • 1.Bf2!
      • threat
        • 2.Bf3#
      • 1...Qxa4
        • 2.Sf6#
      • 1...Rb4
        • 2.Qf5#
      • 1...Bf3
        • 2.Bxf3#
        • 2.gxf3#
      • 1...Bb4
        • 2.Rf4#
      • 1...Bf4
        • 2.Rxf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(E);
      • Threat
        • R(D)+B(F),DCHECK
      • Vars
        • Q(h);N_GUARD,XR(D)::S(J)
        • R(b);N_GUARD::R1(I),XR(b)
        • R(b);::R(D)+B(F),DCHECK,XR(b)
        • R(g);N_GUARD::QAR1(H)
      • Refutation
        • B(d);
    • Try
      • Q(H);CHECK
      • Vars
        • K(f);S_FLIGHT::B(F)
        • R(b);P_SPINR(b)::S(J)
        • R(g);P_SPINR(g)::S(J)
      • Refutation
        • Q(h);XQ(H)
  • Actual
    • B(E);
    • Threat
      • R(D)+B(F),DCHECK
    • Vars
      • Q(h);N_GUARD,XR(D)::S(J)
      • R(g);N_GUARD::QAB1(H)
      • B(d);N_GUARD::R1(I)
      • B(d);N_GUARD,P_PINP(C)::R1(I),XB(d)
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