MESON Chess Problem Database

Problem Display
PID: 21654 (5B2/1K1B4/3P4/Npk1bb1R/2r1p3/Ppr1P3/3Q1N1q/2R5 w - - 0 1)

Sheppard, Charles William

Comm., Good Companions (January), 1920

5B2/1K1B4/3P4/Npk1bb1R/2r1p3/Ppr1P3/3Q1N1q/2R5

#2

11 + 9

3391 Het Half Pin Thema 1924

SOLUTION

  • SOUND
  • Sets
    • 1...Rxc1
      • 2.Sxb3#
    • 1...Rc2
      • 2.Sxb3#
  • Tries
    • 1.Rxc3?
      • threat
        • 2.Sxb3#
      • 1...Bd4
        • 2.Qxd4#
      • 1...b2
        • 2.Sb3#
      • 1...Rxc3!
  • Keys
    • 1.Be6!
      • threat
        • 2.Qd5#
      • 1...Bxe6
        • 2.d7#
      • 1...Rd3
        • 2.Qb4#
      • 1...Rd4
        • 2.Sxb3#
      • 1...Bd4
        • 2.Sxe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • R(c);N_GUARD,XR(A)::S(F),XP(b)
    • R(c);N_GUARD::S(F),XP(b)
  • Tries
    • Try
      • R(A);P_PINR(d),XR(c)
      • Threat
        • S(F),XP(b)
      • Vars
        • B(h);N_GUARD,P_SPINB(i)::QAB1(B),XB(h)
        • P(b);::S(F)
      • Refutation
        • R(d);N_SPINR(d),XR(A)
  • Actual
    • B(J);
    • Threat
      • QAR1(B)
    • Vars
      • B(i);P_SPINB(h),XB(J)::B(K)+P(H)
      • R(c);OGATE,P_SPINR(d)::QAB1(B)
      • R(d);P_SPINR(c)::S(F),XP(b)
      • B(h);P_SPINB(i),S_CUTR(d)::S(C),XP(e)
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