MESON Chess Problem Database

Problem Display
PID: 143919 (8/1n1P2K1/3pPpp1/2NPkq1b/3R3Q/3P1p2/8/8 w - - 0 1)

Maleika, Gerhard

British Chess Magazine, 1992

8/1n1P2K1/3pPpp1/2NPkq1b/3R3Q/3P1p2/8/8

#2

8 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Qxd3
      • 2.Qxf6#
      • 2.Qf4#
    • 1...Qh3
      • 2.Qxf6#
      • 2.Qe4#
      • 2.Qf4#
    • 1...Qe4
      • 2.Qxf6#
      • 2.Qxe4#
    • 1...Qg4
      • 2.Qxf6#
    • 1...Qxe6
      • 2.Qe4#
      • 2.Qf4#
    • 1...Qf4
      • 2.Qxf4#
    • 1...Qg5
      • 2.Qe4#
  • Tries
    • 1.Re4+?
      • 1...Qxe4
        • 2.Qxe4#
      • 1...Kxd5!
    • 1.Qe1+?
      • 1...Qe4
        • 2.Qxe4#
      • 1...Kxd4!
    • 1.Qg3+?
      • 1...Qf4
        • 2.Qxf4#
      • 1...Kxd4!
    • 1.Qh2+?
      • 1...Qf4
        • 2.Qxf4#
      • 1...Kxd4!
  • Keys
    • 1.d8S!
      • threat
        • 2.Sd7#
        • 2.Sc6#
        • 2.Sf7#
      • 1...Qxd3
        • 2.Qxf6#
        • 2.Qf4#
      • 1...Qxe6
        • 2.Qe4#
        • 2.Qf4#
      • 1...Sxc5
        • 2.Sc6#
        • 2.Sf7#
      • 1...Sxd8
        • 2.Sd7#
      • 1...dxc5
        • 2.Sf7#
      • 1...Qh3
        • 2.Qxf6#
        • 2.Qe4#
        • 2.Qf4#
      • 1...Qe4
        • 2.Qxf6#
        • 2.Qxe4#
      • 1...Qg4
        • 2.Qxf6#
      • 1...Qf4
        • 2.Qxf4#
      • 1...Qg5
        • 2.Qe4#
      • 1...Bg4
        • 2.Sc6#
      • 1...Sa5
        • 2.Sd7#
        • 2.Sf7#
      • 1...g5
        • 2.Sd7#
        • 2.Sc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • Q(c);N_GUARD::QAB1(C),XP(f)
    • Q(c);N_GUARD::QAB1(C),XQ(c)
    • Q(c);N_GUARD::QAR1(C)
  • Tries
    • Try
      • R(B);CHECK
      • Vars
        • Q(c);OGATE,XR(B)::QAR1(C),XQ(c)
      • Refutation
        • K(b);P-FLIGHT,XP(E)
    • Try
      • Q(C);CHECK
      • Vars
        • Q(c);N_GUARD,P_SPINQ(c)::QAR1(C),XQ(c)
      • Refutation
        • K(b);S_FLIGHT,XR(B)
    • Try
      • Q(C);CHECK
      • Vars
        • Q(c);N_GUARD,P_SPINQ(c)::QAB1(C),XQ(c)
      • Refutation
        • K(b);S_FLIGHT,XR(B)
    • Try
      • Q(C);CHECK
      • Vars
        • Q(c);N_GUARD,P_SPINQ(c)::QAB1(C),XQ(c)
      • Refutation
        • K(b);S_FLIGHT,XR(B)
  • Actual
    • P(G);
    • Threat
      • DUALS(3)
    • Vars
      • S(h);XS(G)::S(D)
      • P(e);XS(D)::S(G)
      • Q(c);N_GUARD::QAB1(C),XP(f)
      • Q(c);N_GUARD::QAB1(C),XQ(c)
      • Q(c);N_GUARD::QAR1(C)
      • B(d);::S(G)
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