MESON Chess Problem Database

Problem Display
PID: 189634 (8/8/3R1Rr1/2P1k1N1/3p1p2/6p1/2bPPPq1/2K1N3 w - - 0 1)

Gold, Samuel

Magyar Sakkvilag, 1911

8/8/3R1Rr1/2P1k1N1/3p1p2/6p1/2bPPPq1/2K1N3

#2

9 + 7

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Qf3
      • 2.Sexf3#
    • 1...Qh3
      • 2.Sef3#
    • 1...Qe4
      • 2.Sf7#
    • 1...Qh2
      • 2.Sef3#
    • 1...Bd1
      • 2.Sd3#
    • 1...Bb3
      • 2.Sd3#
    • 1...Bd3
      • 2.Sxd3#
    • 1...Ba4
      • 2.Sd3#
    • 1...Be4
      • 2.Sf7#
  • Tries
    • 1.Sgf3+?
      • 1...Ke4
        • 2.Rxd4#
      • 1...Qxf3!
  • Keys
    • 1.e4!
      • threat
        • 2.Rde6#
        • 2.Rf5#
      • 1...Qxe4
        • 2.Sf7#
      • 1...Rxg5
        • 2.Rde6#
        • 2.Rfe6#
      • 1...Rxf6
        • 2.Rd5#
      • 1...Bxe4
        • 2.Sf7#
      • 1...dxe4 ep
        • 2.d4#
      • 1...fxe4 ep
        • 2.f4#
      • 1...Qh3
        • 2.Sef3#
      • 1...Bb3
        • 2.Sd3#
        • 2.Rf5#
      • 1...d3
        • 2.Rf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 6
  • Sets
    • Q(b);N_GUARD::S(B),XQ(b)
    • Q(b);N_GUARD::S(B)
    • Q(b);SBLOCK::S(G)
    • B(a);N_GUARD::S(B)
    • B(a);N_GUARD::S(B),XB(a)
    • B(a);SBLOCK::S(G)
  • Tries
    • Try
      • S(G);CHECK
      • Vars
        • K(f);P-FLIGHT::R1(H),XP(d)
      • Refutation
        • Q(b);XS(G)
  • Actual
    • P(D);
    • Threat
      • DUALS(2)
    • Vars
      • Q(b);SBLOCK,XP(D)::S(G)
      • R(g);SBLOCK,XR(I)::R1(H)
      • B(a);SBLOCK,XP(D)::S(G)
      • P(d);EP,OGATE,XP(D)::P(C)
      • P(e);EP,OGATE,XP(D)::P(E)
      • Q(b);N_GUARD::S(B)
      • P(d);::R1(I)
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