MESON Chess Problem Database

Problem Display
PID: 262033 (3nNb2/3Q4/K1p1P1pp/1Bk2pnR/1p1p4/2p5/5R2/2B5 w - - 0 1)

Somma, Francesco

Schweizerische Schachzeitung, 1925

3nNb2/3Q4/K1p1P1pp/1Bk2pnR/1p1p4/2p5/5R2/2B5

#2

8 + 11

15601 Albrecht-Leiss-Degener Collection 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Bd6
      • 2.Qxd6#
    • 1...Bg7
      • 2.Qd6#
    • 1...Sxe6
      • 2.Qxc6#
    • 1...Sb7
      • 2.Qxc6#
    • 1...Sf7
      • 2.Qxc6#
    • 1...c2
      • 2.Rxc2#
    • 1...b3
      • 2.Ba3#
    • 1...d3
      • 2.Be3#
    • 1...cxb5
      • 2.Qxb5#
    • 1...gxh5
      • 2.Rxf5#
  • Keys
    • 1.Sf6!
      • 1...Sgxe6
        • 2.Se4#
      • 1...Sdxe6
        • 2.Qxc6#
      • 1...cxb5
        • 2.Qd5#
      • 1...gxh5
        • 2.Rxf5#
      • 1...b3
        • 2.Ba3#
      • 1...Bd6
        • 2.Qa7#
      • 1...Be7
        • 2.Qxe7#
      • 1...Bg7
        • 2.Qe7#
      • 1...Sf3
        • 2.Se4#
      • 1...Sh3
        • 2.Se4#
      • 1...Se4
        • 2.Sxe4#
      • 1...Sgf7
        • 2.Se4#
      • 1...Sh7
        • 2.Se4#
      • 1...Sb7
        • 2.Qxc6#
      • 1...Sdf7
        • 2.Qxc6#
      • 1...c2
        • 2.Rxc2#
      • 1...d3
        • 2.Be3#
      • 1...f4
        • 2.Se4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 3
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
    • B(k);N_GUARD::QAB1(G),XB(k)
    • B(k);N_GUARD::QAB1(G)
    • S(j);N_GUARD,XP(F)::QAR1(G),XP(g)
    • S(j);N_GUARD::QAR1(G),XP(g)
    • P(a);OGATEB::R(B),XP(a)
    • P(b);OGATEB::B(A)
    • P(c);OGATEB::B(A)
    • P(g);OGATE,XB(C)::QAR1(G),XP(g)
    • P(h);N_GUARD,XR(D)::R(B),XP(e)
  • Actual
    • S(H);
    • Vars
      • S(f);N_GUARD,P_SPINP(e),XP(F)::S(H)
      • S(j);N_GUARD,XP(F)::QAR1(G),XP(g)
      • P(g);N_GUARD,XB(C)::QAR1(G)
      • P(h);N_GUARD,XR(D)::R(B),XP(e)
      • P(b);OGATEB::B(A)
      • B(k);SBLOCK::QAB(G)
      • B(k);N_GUARD::QAB(G),XB(k)
      • B(k);N_GUARD::QAB(G)
      • S(f);N_GUARD,P_SPINP(e)::S(H)
      • S(f);N_GUARD,P_SPINP(e)::S(H),XS(f)
      • S(j);N_GUARD::QAR1(G),XP(g)
      • P(a);OGATEB::R(B),XP(a)
      • P(c);OGATEB::B(A)
      • P(e);N_GUARD,P_SPINS(f)::S(H)
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