MESON Chess Problem Database

Problem Display
PID: 184885 (4Q1K1/3p4/1bRN1p2/p2k1p2/B2P4/5P1b/2P1n3/2n5 w - - 0 1)

Wainwright, Joseph CJ

American Chess Bulletin, 1908

4Q1K1/3p4/1bRN1p2/p2k1p2/B2P4/5P1b/2P1n3/2n5

#2

8 + 9

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Bxd4
      • 2.c4#
    • 1...Sxd4
      • 2.c4#
    • 1...f4
      • 2.Qe4#
  • Tries
    • 1.Sxf5?
      • threat
        • 2.Qxd7#
        • 2.Qf7#
        • 2.Qe4#
        • 2.c4#
      • 1...Bxd4
        • 2.Qe4#
        • 2.c4#
      • 1...Sxd4
        • 2.Se3#
        • 2.Qe4#
        • 2.c4#
      • 1...dxc6
        • 2.Qxc6#
        • 2.Qf7#
      • 1...Bc5
        • 2.Rxc5#
        • 2.Qf7#
      • 1...Bc7
        • 2.Rc5#
        • 2.Qf7#
        • 2.Qe4#
        • 2.c4#
      • 1...Sc3
        • 2.Qxd7#
        • 2.Qf7#
      • 1...Sg3
        • 2.Qxd7#
        • 2.Qf7#
        • 2.c4#
      • 1...Sf4
        • 2.Qxd7#
        • 2.Qe4#
        • 2.c4#
      • 1...d6
        • 2.Qf7#
        • 2.Qe4#
        • 2.c4#
      • 1...Bxf5!
  • Keys
    • 1.Sb5!
      • threat
        • 2.Qxd7#
      • 1...Kxc6
        • 2.Qa8#
      • 1...Bxd4
        • 2.Sc7#
      • 1...Sxd4
        • 2.Sc3#
      • 1...dxc6
        • 2.Qf7#
      • 1...Bc5
        • 2.Rxc5#
      • 1...Bc7
        • 2.Rc5#
      • 1...f4
        • 2.Qe4#
      • 1...d6
        • 2.c4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • B(g);SBLOCK,XP(D)::P(A)
    • S(b);SBLOCK,XP(D)::P(A)
    • P(f);N_GUARD::QAB1(G)
  • Tries
    • Try
      • S(F);XP(f)
      • Threat
        • DUALS(4)
      • Refutation
        • B(c);XS(F)
  • Actual
    • S(F);
    • Threat
      • QAR2(G),XP(i)
    • Vars
      • K(e);OGATEB,P_SPINP(i),S_FLIGHT,XR(E)::QAB(G)
      • B(g);N_GUARD,SBLOCK,XP(D)::S(F)
      • S(b);N_GUARD,SBLOCK,XP(D)::S(F)
      • P(i);SBLOCK,XR(E)::QAB(G)
      • B(g);N_GUARD::R1(E),XB(g)
      • B(g);N_GUARD::R1(E)
      • P(f);N_GUARD::QAB1(G)
      • P(i);::P(A)
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