MESON Chess Problem Database

Problem Display
PID: 259668 (q1b1Q3/5p2/R1n1nk1P/3R4/7P/8/1p6/1B5K w - - 0 1)

Somma, Francesco

L'Italia Scacchistica, 1929

q1b1Q3/5p2/R1n1nk1P/3R4/7P/8/1p6/1B5K

#2

7 + 7

15601 Albrecht-Leiss-Degener Collection 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Sb4
      • 2.Qd8#
    • 1...Scd4
      • 2.Qd8#
    • 1...Sa5
      • 2.Qd8#
    • 1...Se5
      • 2.Qd8#
    • 1...Sa7
      • 2.Qd8#
    • 1...Se7
      • 2.Qh8#
    • 1...Sb8
      • 2.Qd8#
    • 1...Scd8
      • 2.Qxd8#
    • 1...Sed4
      • 2.Qe5#
    • 1...Sf4
      • 2.Qe5#
    • 1...Sc5
      • 2.Qe5#
    • 1...Sg5
      • 2.Qe5#
      • 2.hxg5#
    • 1...Sc7
      • 2.Qe5#
    • 1...Sg7
      • 2.Qe5#
    • 1...Sed8
      • 2.Qe5#
    • 1...Sf8
      • 2.Qe5#
  • Keys
    • 1.h5!
      • threat
        • 2.Rf5#
      • 1...Se5
        • 2.Qd8#
      • 1...Sb4
        • 2.Qd8#
      • 1...Scd4
        • 2.Qd8#
      • 1...Sa5
        • 2.Qd8#
      • 1...Sa7
        • 2.Qd8#
      • 1...Se7
        • 2.Qh8#
      • 1...Sb8
        • 2.Qd8#
      • 1...Scd8
        • 2.Qxd8#
      • 1...Sed4
        • 2.Qe5#
      • 1...Sf4
        • 2.Qe5#
      • 1...Sc5
        • 2.Qe5#
      • 1...Sg5
        • 2.Qe5#
      • 1...Sc7
        • 2.Qe5#
      • 1...Sg7
        • 2.Qe5#
      • 1...Sed8
        • 2.Qe5#
      • 1...Sf8
        • 2.Qe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • S(b);N_GUARD,P_PINR(D),P_SPINS(c)::QAB(G)
    • S(b);P_PINR(D),P_SPINS(c),SBLOCK::QAB(G)
    • S(b);N_GUARD,P_PINR(D),P_SPINS(c)::QAB(G),XS(b)
    • S(c);OGATE,P_SPINS(b)::QAB1(G)
  • Actual
    • P(C);
    • Threat
      • R1(D)
    • Vars
      • S(b);N_GUARD,P_PINR(D),P_SPINS(c)::QAB(G)
      • S(b);P_PINR(D),P_SPINS(c),SBLOCK::QAB(G)
      • S(b);N_GUARD,P_PINR(D),P_SPINS(c)::QAB(G),XS(b)
      • S(c);OGATE,P_SPINS(b)::QAB1(G)
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