MESON Chess Problem Database

Problem Display
PID: 260821 (7b/Np3K2/8/3kp3/4R3/1N1b4/1n6/2Q2B2 w - - 0 1)

de Barbieri, Vittorio

Hampstead and Highgate Express, 1903

(First published on Sat Jul 25 1903)

7b/Np3K2/8/3kp3/4R3/1N1b4/1n6/2Q2B2

#2

6 + 6

15601 Albrecht-Leiss-Degener Collection 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Bxe4
      • 2.Qc5#
    • 1...b5
      • 2.Qc6#
    • 1...b6
      • 2.Qc6#
  • Tries
    • 1.Bg2?
      • threat
        • 2.Rd4#
        • 2.Qc5#
      • 1...Bxe4
        • 2.Qc5#
      • 1...Bc2
        • 2.Rd4#
      • 1...Bc4
        • 2.Rd4#
      • 1...Sa4
        • 2.Rd4#
      • 1...Sc4
        • 2.Rd4#
      • 1...b6
        • 2.Rd4#
        • 2.Qc6#
      • 1...Kd6!
  • Keys
    • 1.Qg5!
      • threat
        • 2.Rd4#
      • 1...Kxe4
        • 2.Bg2#
      • 1...Kd6
        • 2.Qd8#
      • 1...Bxe4
        • 2.Qd8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • B(b);SBLOCK,XR(D)::QAR1(A)
    • P(e);N_GUARD::QAB1(A)
  • Tries
    • Try
      • B(B);
      • Threat
        • DUALS(2)
      • Vars
        • B(b);P_SPINB(b),XR(D)::QAR1(A)
        • B(b);::B(B)+R(D),DCHECK
        • S(a);::B(B)+R(D),DCHECK
      • Refutation
        • K(c);P-FLIGHT
  • Actual
    • Q(A);P_PINP(d)
    • Threat
      • R1(D)
    • Vars
      • K(c);N_SPINP(d),OGATEB,S_FLIGHT,XR(D)::B(B)
      • K(c);N_GUARD,N_SPINP(d),P-FLIGHT::QAR2(A)
      • B(b);SBLOCK,XR(D)::QAR(A)
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