MESON Chess Problem Database

Problem Display
PID: 256590 (5N2/PN2p2Q/RPk5/B1Pp4/KR2pb1q/7b/8/8 w - - 0 1)

Dawson, Thomas Rayner

British Chess Magazine, 1933

5N2/PN2p2Q/RPk5/B1Pp4/KR2pb1q/7b/8/8

#2

10 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Kxb7
      • 2.a8Q#
    • 1...Bc7
      • 2.bxc7#
    • 1...d4
      • 2.Qxe4#
    • 1...e5
      • 2.Qc7#
    • 1...e6
      • 2.Qd7#
  • Tries
    • 1.Rc4?
      • threat
        • 2.Sd8#
      • 1...Kxb7
        • 2.a8Q#
      • 1...dxc4
        • 2.Qxe4#
      • 1...d4
        • 2.Qxe4#
      • 1...e5
        • 2.Qc7#
      • 1...e6
        • 2.Qd7#
      • 1...Bc7!
  • Keys
    • 1.Rb5!
      • threat
        • 2.Sd8#
      • 1...Kxb7
        • 2.a8Q#
      • 1...d4
        • 2.Qxe4#
      • 1...Bc7
        • 2.bxc7#
      • 1...e5
        • 2.Qc7#
      • 1...e6
        • 2.Qd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • K(f);P_SPINP(g),S_FLIGHT,XS(H)::P=Q
    • B(c);OGATE::R(E)+P(F),XB(c)
    • P(e);OGATEB::QAB(I),XP(b)
    • P(g);OGATE::QAR1(I)
    • P(g);OGATE::QAB1(I)
  • Tries
    • Try
      • R(B);
      • Threat
        • S(H)
      • Vars
        • K(f);P_SPINP(g),S_FLIGHT,XS(H)::P=Q
        • P(e);OGATEB,XR(B)::QAB(I),XP(b)
        • P(e);OGATEB::QAB(I),XP(b)
        • P(g);OGATE::QAR1(I)
        • P(g);OGATE::QAB1(I)
      • Refutation
        • B(c);
  • Actual
    • R(B);
    • Threat
      • S(H)
    • Vars
      • K(f);P_SPINP(g),S_FLIGHT,XS(H)::P=Q
      • P(e);OGATEB::QAB(I),XP(b)
      • B(c);OGATE::R(E)+P(F),XB(c)
      • P(g);OGATE::QAR1(I)
      • P(g);OGATE::QAB1(I)
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Developed and maintained by Brian Stephenson.
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