MESON Chess Problem Database

Problem Display
PID: 121320 (6b1/Q4R2/4k2r/7n/5p2/BK1B2nr/8/2b5 w - - 0 1)

Rosner, Eugene David

La Strategie, 1886

6b1/Q4R2/4k2r/7n/5p2/BK1B2nr/8/2b5

#2

5 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Bf5+?
      • 1...Kd5
        • 2.Qc5#
      • 1...Ke5
        • 2.Qc5#
      • 1...Sxf5+!
    • 1.Re7+?
      • 1...Kd5
        • 2.Qc5#
      • 1...Kf6+!
  • Keys
    • 1.Qc5!
      • threat
        • 2.Bc4#
      • 1...Kxf7
        • 2.Qe7#
      • 1...Bxf7
        • 2.Qd6#
      • 1...Sf1
        • 2.Qf5#
      • 1...Sh1
        • 2.Qf5#
      • 1...Se2
        • 2.Qf5#
      • 1...Se4
        • 2.Qf5#
      • 1...Sf5
        • 2.Qxf5#
      • 1...Sf6
        • 2.Re7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(C);CHECK
      • Vars
        • K(f);S_FLIGHT::QAR1(D)
        • K(f);P-FLIGHT,P_PINR(E)::QAR2(D)
      • Refutation
        • S(b);CHECK,XB(C)
    • Try
      • R(E);CHECK
      • Vars
        • K(f);S_FLIGHT::QAR1(D)
      • Refutation
        • K(f);CHECK,P-FLIGHT
  • Actual
    • Q(D);
    • Threat
      • B(C)
    • Vars
      • K(f);S_FLIGHT,XR(E)::QAR1(D)
      • B(h);SBLOCK,XR(E)::QAR1(D)
      • S(b);N_GUARD,P_PINB(C)::QAB1(D)
      • S(b);N_GUARD,P_PINB(C)::QAB1(D),XS(b)
      • S(e);SBLOCK::R1(E)
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