MESON Chess Problem Database

Problem Display
PID: 143130 (r2R2B1/b1Bpk1Pp/1rb2N2/3p4/2N5/8/QP6/K4R2 w - - 0 1)

Sedgwick, Stanley

Lippische Landeszeitung, 1950

(First published on Thu May 4 1950)

r2R2B1/b1Bpk1Pp/1rb2N2/3p4/2N5/8/QP6/K4R2

#2

10 + 8

133 The Problemist Supplement 2011

SOLUTION

  • SOUND
  • Sets
    • 1...Rxd8
      • 2.Bd6#
    • 1...Ba4
      • 2.Sxd5#
    • 1...Bb5
      • 2.Sxd5#
    • 1...Bb7
      • 2.Rxd7#
    • 1...Bb8
      • 2.Re8#
  • Tries
    • 1.Bxd5?
      • threat
        • 2.Sg8#
        • 2.g8S#
      • 1...Rxd8
        • 2.Bd6#
      • 1...Bxd5!
    • 1.Qa3+?
      • 1...d6
        • 2.Qxd6#
        • 2.Qe3#
      • 1...Rb4!
  • Keys
    • 1.Qa5!
      • threat
        • 2.Qe1#
      • 1...Rxb2
        • 2.Bd6#
      • 1...dxc4
        • 2.Qe5#
      • 1...Rb3
        • 2.Bd6#
      • 1...Rb4
        • 2.Bd6#
      • 1...Rb5
        • 2.Bd6#
      • 1...Ra6
        • 2.Bd6#
      • 1...Rb7
        • 2.Bd6#
      • 1...Rbb8
        • 2.Bd6#
      • 1...Ba4
        • 2.Sxd5#
      • 1...Bb5
        • 2.Sxd5#
      • 1...Bb7
        • 2.Rxd7#
      • 1...Bb8
        • 2.Re8#
      • 1...d4
        • 2.Qe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 1
  • Sets
    • R(h);SBLOCK,XR(I)::B(G)
    • B(c);N_GUARD::S(F),XP(a)
    • B(c);N_GUARD::R1(I),XP(e)
    • B(d);P_PINQ(C),S_CUTR(h)::R1(I)
  • Tries
    • Try
      • B(J);XP(a)
      • Threat
        • DUALS(2)
      • Vars
        • R(h);SBLOCK,XR(I)::B(G)
      • Refutation
        • B(c);XB(J)
    • Try
      • Q(C);CHECK
      • Refutation
        • R(b);P_SPINR(b)
  • Actual
    • Q(C);
    • Threat
      • QAR(C)
    • Vars
      • R(b);XP(D)::B(G)
      • P(a);OGATE,XS(E)::QAR2(C)
      • R(b);::B(G)
      • R(b);P_PINQ(C)::B(G)
      • B(c);N_GUARD::S(F),XP(a)
      • B(c);N_GUARD::R1(I),XP(e)
      • B(d);P_PINQ(C),S_CUTR(h)::R1(I)
      • P(a);OGATE::QAR2(C)
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