MESON Chess Problem Database

Problem Display
PID: 90256 (4r3/2Q1nNN1/4q3/4P2R/rnb2k1P/2R2P1p/2pP3K/6B1 w - - 0 1)

Szoghy, Jozsef

Die Schwalbe, 1957

4r3/2Q1nNN1/4q3/4P2R/rnb2k1P/2R2P1p/2pP3K/6B1

#2

11 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qg4
      • 2.Qxc4#
      • 2.e6#
    • 1...Qxf7
      • 2.e6#
    • 1...Qxe5
      • 2.Qxe5#
    • 1...Qf6
      • 2.Qxc4#
      • 2.exf6#
    • 1...Qg6
      • 2.e6#
    • 1...Qh6
      • 2.Qxc4#
      • 2.e6#
    • 1...Bf1
      • 2.Sxe6#
    • 1...Be2
      • 2.Sxe6#
    • 1...Bb5
      • 2.Sxe6#
    • 1...Ba6
      • 2.Sxe6#
    • 1...Sbd5
      • 2.Sxe6#
    • 1...Sed5
      • 2.Qxc4#
  • Tries
    • 1.Rf5+?
      • 1...Sxf5
        • 2.Sh5#
      • 1...Qxf5!
  • Keys
    • 1.Sg5!
      • threat
        • 2.Be3#
      • 1...Qd6
        • 2.Sxh3#
      • 1...Qb6
        • 2.Sxh3#
      • 1...Sbd5
        • 2.S5xe6#
      • 1...Sed5
        • 2.Rxc4#
      • 1...Sf5
        • 2.Sxh3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 7
  • Sets
    • Q(g);OGATE,XS(J)::QAB(I)+P(G)
    • Q(g);OGATE,P_SPINQ(g),XP(G)::QAB1(I),XQ(g)
    • Q(g);OGATE::QAB(I)+P(G)
    • B(e);N_GUARD::S(K),XQ(g)
    • S(d);S_CUTB(e)::S(K),XQ(g)
    • S(h);S_CUTQ(g)::QAR(I),XB(e)
  • Tries
    • Try
      • R(H);CHECK
      • Vars
        • S(h);SBLOCK,XR(H)::S(K)
      • Refutation
        • Q(g);XR(H)
  • Actual
    • S(J);
    • Threat
      • B(A)
    • Vars
      • Q(g);N_GUARD::S(J),XP(b)
      • S(d);S_CUTB(e)::S(J),XQ(g)
      • S(h);S_CUTQ(g)::R(D),XB(e)
      • S(h);S_CUTQ(g)::S(J),XP(b)
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