MESON Chess Problem Database

Problem Display
PID: 32655 (8/q3p3/3p1PNK/1P1k1PRb/1Pp3B1/2P3N1/2RP3p/Q5b1 w - - 0 1)

Sydenham, Colin Peter

Correspondence Chess, 2000

8/q3p3/3p1PNK/1P1k1PRb/1Pp3B1/2P3N1/2RP3p/Q5b1

#2

13 + 8

15513 Selected Chess Problems of Colin Sydenham 2015

SOLUTION

  • SOUND
  • Sets
    • 1...Qf2
      • 2.Qa8#
    • 1...Qe3
      • 2.Qa8#
    • 1...Qd4
      • 2.Qa8#
    • 1...Qa8
      • 2.Qxa8#
    • 1...Bf2
      • 2.Qh1#
    • 1...Be3
      • 2.Qh1#
    • 1...Bd4
      • 2.Qh1#
    • 1...Bc5
      • 2.Qh1#
    • 1...Bb6
      • 2.Qh1#
    • 1...e5
      • 2.fxe5 ep#
    • 1...e6
      • 2.fxe6#
  • Tries
    • 1.Qe1?
      • threat
        • 2.Sf4#
        • 2.Qe4#
        • 2.Qe6#
      • 1...Bxg6
        • 2.Bf3#
        • 2.Qe4#
        • 2.Qe6#
      • 1...h1Q
        • 2.Sf4#
        • 2.Qe6#
      • 1...h1B
        • 2.Sf4#
        • 2.Qe6#
      • 1...Qf2
        • 2.Sxe7#
        • 2.Qe4#
        • 2.Qe6#
      • 1...Qd4
        • 2.Sxe7#
        • 2.Qe6#
      • 1...Qd7
        • 2.Sf4#
        • 2.Qe4#
      • 1...Be3
        • 2.Qh1#
      • 1...e5
        • 2.Qe4#
        • 2.fxe5 ep#
      • 1...e6
        • 2.Sf4#
        • 2.Qe4#
        • 2.Qxe6#
        • 2.fxe6#
      • 1...Qe3!
  • Keys
    • 1.d4!
      • threat
        • 2.Sf4#
      • 1...Qxd4
        • 2.Qa8#
      • 1...Bxd4
        • 2.Qh1#
      • 1...Bxg6
        • 2.Bf3#
      • 1...cxd4 ep
        • 2.c4#
      • 1...Be3
        • 2.Qh1#
      • 1...e5
        • 2.fxe5 ep#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 7
  • Sets
    • Q(g);OGATE::QAB(A)
    • Q(g);OGATE,P_PINR(J)::QAB(A)
    • Q(g);OGATE::QAB(A),XQ(g)
    • B(a);OGATE::QAB(A)
    • B(a);OGATE,P_PINR(J)::QAB(A)
    • P(h);OGATE::R(J)+P(I),XP(h),EP
    • P(h);OGATE::R(J)+P(I),XP(h)
  • Tries
    • Try
      • Q(A);
      • Threat
        • DUALS(3)
      • Vars
        • B(a);OGATE,P_PINR(J)::QAB(A)
      • Refutation
        • Q(g);P_PINR(J)
  • Actual
    • P(C);
    • Threat
      • S(L)
    • Vars
      • Q(g);OGATE,XP(C)::QAB(A)
      • B(a);OGATE,XP(C)::QAB(A)
      • B(e);N_GUARD,XS(L)::B(G)
      • P(c);EP,OGATE,XP(C)::P(D)
      • B(a);OGATE,P_PINR(J)::QAB(A)
      • P(h);OGATE::R(J)+P(I),XP(h),EP
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