MESON Chess Problem Database

Problem Display
PID: 11559 (1N1N4/K1P3QB/1Pp2p1p/4kn2/R1n1P3/3RB1Pq/b1r2rP1/8 w - - 0 1)

Fleck, Ferenc

L'Italia Scacchistica, 1939

1N1N4/K1P3QB/1Pp2p1p/4kn2/R1n1P3/3RB1Pq/b1r2rP1/8

#2

13 + 10

5862 An ABC of Chess Problems 1970
3098 FIDE Album (1914-1944) (I) 1971
4640 Chess Wizardry: The New ABC of Chess Problems 1996
5454 Near Snap 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sb2
      • 2.Sd7#
    • 1...Sd2
      • 2.Sd7#
    • 1...Sa3
      • 2.Sd7#
    • 1...Scxe3
      • 2.Sd7#
    • 1...Sa5
      • 2.Sd7#
    • 1...Scd6
      • 2.Sd7#
    • 1...Sfxe3
      • 2.Sbxc6#
    • 1...Sxg3
      • 2.Sbxc6#
    • 1...Sh4
      • 2.Sbxc6#
    • 1...Sfd6
      • 2.Sbxc6#
      • 2.Bd4#
    • 1...Sxg7
      • 2.Sbxc6#
  • Tries
    • 1.Sdxc6+?
      • 1...Ke6
        • 2.Bg8#
        • 2.Qd7#
        • 2.Qg8#
        • 2.c8Q#
        • 2.c8B#
      • 1...Kxe4!
    • 1.Qxf6+?
      • 1...Kxe4
        • 2.Qd4#
      • 1...Kxf6!
  • Keys
    • 1.Rd6!
      • threat
        • 2.Re6#
      • 1...Kxe4
        • 2.Qe7#
      • 1...Kxd6
        • 2.Qxf6#
      • 1...Scxe3
        • 2.Qxf6#
      • 1...Sxb6
        • 2.Qxf6#
      • 1...Scxd6
        • 2.Sd7#
      • 1...Sfxe3
        • 2.Sf7#
      • 1...Sxg3
        • 2.Sf7#
      • 1...Sfxd6
        • 2.Sbxc6#
      • 1...Sxg7
        • 2.Sf7#
      • 1...Sb2
        • 2.Qxf6#
      • 1...Sd2
        • 2.Qxf6#
      • 1...Sa3
        • 2.Qxf6#
      • 1...Sa5
        • 2.Qxf6#
      • 1...Sd4
        • 2.Sf7#
      • 1...Sh4
        • 2.Sf7#
      • 1...Se7
        • 2.Sf7#

This anticipates 80139(1965)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 9
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • S(e);::S(L)
    • S(e);XB(C)::S(L)
    • S(g);XB(C)::S(L),XP(h)
    • S(g);XP(D)::S(L),XP(h)
    • S(g);::S(L),XP(h)
    • S(g);N_SPINP(i),XQ(J)::S(L),XP(h)
  • Tries
    • Try
      • S(M);CHECK,XP(h)
      • Refutation
        • K(f);N_SPINP(i),P-FLIGHT,P_SPINS(e),XP(F)
    • Try
      • Q(J);CHECK,XP(i)
      • Vars
        • K(f);OGATE,P-FLIGHT,P_SPINS(e),XP(F)::QAR1(J)
      • Refutation
        • K(f);S_FLIGHT,XQ(J)
  • Actual
    • R(B);
    • Threat
      • R1(B)
    • Vars
      • K(f);N_SPINP(i),P-FLIGHT,P_SPINS(e),XP(F)::QAR(J)
      • K(f);N_SPINP(i),S_FLIGHT,XR(B)::QAR2(J),XP(i)
      • S(e);XB(C)::QAB1(J),XP(i)
      • S(e);XP(G)::QAB1(J),XP(i)
      • S(e);SBLOCK,XR(B)::S(L)
      • S(g);XB(C)::S(M)
      • S(g);XP(D)::S(M)
      • S(g);SBLOCK,XR(B)::S(L),XP(h)
      • S(g);N_SPINP(i),XQ(J)::S(M)
      • S(e);::QAB1(J),XP(i)
      • S(g);::S(M)
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