MESON Chess Problem Database

Problem Display
PID: 262938 (2Q5/7r/1BBk4/5p1b/1p1r1P2/8/3R4/1K6 w - - 0 1)

Somma, Francesco

O Globo, 1931

(First published on Mon May 18 1931)

2Q5/7r/1BBk4/5p1b/1p1r1P2/8/3R4/1K6

#2

6 + 6

15601 Albrecht-Leiss-Degener Collection 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Rh6
      • 2.Qd7#
    • 1...Rd7
      • 2.Qxd7#
    • 1...Re7
      • 2.Rxd4#
    • 1...Rh8
      • 2.Qd7#
    • 1...Bf7
      • 2.Qd7#
  • Keys
    • 1.Bd5!
      • threat
        • 2.Qe6#
      • 1...Kxd5
        • 2.Rxd4#
      • 1...Ke7
        • 2.Qd8#
      • 1...Rxd5
        • 2.Bc5#
      • 1...Re4
        • 2.Bc5#
      • 1...Rh6
        • 2.Qd8#
      • 1...Rd7
        • 2.Qc5#
      • 1...Re7
        • 2.Qc6#
      • 1...Bf7
        • 2.Qd8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 4
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • R(f);N_GUARD::QAR1(F)
    • R(f);N_GUARD::QAR1(F),XR(f)
    • R(f);SBLOCK::R(B),XR(b)
    • B(d);S_CUTR(f)::QAR1(F)
  • Actual
    • B(E);N_PINR(b)
    • Threat
      • QAR1(F)
    • Vars
      • K(e);OGATEB,P-FLIGHT,P_SPINR(b),XB(E)::R1(B),XR(b)
      • K(e);S_CUTR(f),S_FLIGHT::QAB1(F)
      • R(b);P_SPINR(b),XB(E)::B(D)
      • R(b);::B(D)
      • R(f);N_GUARD::QAR2(F)
      • R(f);SBLOCK::QAB1(F)
      • R(f);SBLOCK::QAR1(F)
      • B(d);S_CUTR(f)::QAR2(F)
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