MESON Chess Problem Database

Problem Display
PID: 219020 (2n2B1b/p2Q1b2/Pp2NkPK/1P1rN2p/7P/2P5/8/8 w - - 0 1)

Zim, Joh Karl

Charleston Sunday News, 1882

2n2B1b/p2Q1b2/Pp2NkPK/1P1rN2p/7P/2P5/8/8

#2

10 + 8

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Rxe5
      • 2.Qxf7#
  • Tries
    • 1.Sd4?
      • threat
        • 2.Qf5#
      • 1...Bg7+
        • 2.Bxg7#
      • 1...Kxe5
        • 2.Qf5#
      • 1...Rxe5
        • 2.Qxf7#
      • 1...Rxd7
        • 2.Sxd7#
      • 1...Bxg6
        • 2.Qe6#
      • 1...Be6
        • 2.Qxe6#
      • 1...Sd6
        • 2.Qe7#
      • 1...Se7
        • 2.Qxe7#
      • 1...Rxd4!
  • Keys
    • 1.Sg7!
      • threat
        • 2.Qf5#
      • 1...Bxg7+
        • 2.Bxg7#
      • 1...Kxe5
        • 2.Qf5#
      • 1...Rxe5
        • 2.Qxf7#
      • 1...Rxd7
        • 2.Sxd7#
      • 1...Bxg6
        • 2.Qe6#
      • 1...Be6
        • 2.Qxe6#
      • 1...Sd6
        • 2.Qe7#
      • 1...Se7
        • 2.Qxe7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • R(a);SBLOCK,XS(D)::QAR1(I),XB(f)
  • Tries
    • Try
      • S(F);
      • Threat
        • QAR1(I)
      • Vars
        • B(h);CHECK,N_GUARD::B(J),XB(h)
        • K(d);S_FLIGHT,XS(D)::QAR1(I)
        • R(a);SBLOCK,XS(D)::QAR1(I),XB(f)
        • R(a);XQ(I)::S(D),XR(a)
        • B(f);N_GUARD,XP(G)::QAR1(I)
        • B(f);N_GUARD::QAR1(I),XB(f)
        • S(g);N_GUARD::QAB1(I)
        • S(g);N_GUARD::QAB1(I),XS(g)
      • Refutation
        • R(a);XS(F)
  • Actual
    • S(F);
    • Threat
      • QAR1(I)
    • Vars
      • B(h);CHECK,OGATE,XS(F)::B(J),XB(h)
      • K(d);S_FLIGHT,XS(D)::QAR1(I)
      • R(a);SBLOCK,XS(D)::QAR1(I),XB(f)
      • R(a);XQ(I)::S(D),XR(a)
      • B(f);N_GUARD,XP(G)::QAR1(I)
      • B(f);N_GUARD::QAR1(I),XB(f)
      • S(g);N_GUARD::QAB1(I)
      • S(g);N_GUARD::QAB1(I),XS(g)
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