MESON Chess Problem Database

Problem Display
PID: 21650 (b3Q2K/pkrn1R2/p5R1/pnp1P3/N7/7B/8/8 w - - 0 1)

Watney, Charles Gold

2nd Prize Set, 02. Mansfield Test - Good Companions (May), 1920

b3Q2K/pkrn1R2/p5R1/pnp1P3/N7/7B/8/8

#2

7 + 9

3132 The Good Companion Two-Mover 1922
3391 Het Half Pin Thema 1924
785 Het Belgisch Schaakbord (L'Echiquier Belge) 1956
3098 FIDE Album (1914-1944) (I) 1971
56 The Problemist 2004

SOLUTION

  • SOUND
  • Sets
    • 1...Sxe5
      • 2.Sxc5#
      • 2.Qc8#
    • 1...Sb6
      • 2.Sxc5#
    • 1...Sb8
      • 2.Sxc5#
      • 2.Bc8#
      • 2.Qc8#
    • 1...Sf8
      • 2.Sxc5#
      • 2.Bg2#
      • 2.Qc8#
  • Tries
    • 1.Sxc5+?
      • 1...Sxc5
        • 2.Qc8#
      • 1...Rxc5!
    • 1.Rb6+?
      • 1...Sxb6
        • 2.Sxc5#
      • 1...axb6!
    • 1.Qb8+?
      • 1...Sxb8
        • 2.Sxc5#
      • 1...Kxb8!
  • Keys
    • 1.Rg8!
      • threat
        • 2.Qxa8#
      • 1...Kc6
        • 2.Bg2#
      • 1...Rc8
        • 2.Qxc8#
      • 1...Rc6
        • 2.Qb8#
      • 1...Sb6
        • 2.Sxc5#
      • 1...Sb8
        • 2.Bc8#
      • 1...Sf8
        • 2.Bg2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • S(h);N_GUARD,P_SPINR(g)::S(B),XP(c)
  • Tries
    • Try
      • S(B);CHECK,XP(c)
      • Vars
        • S(h);P_SPINR(g),XS(B)::QAB1(F)
      • Refutation
        • R(g);P_SPINS(h),XS(B)
    • Try
      • R(D);CHECK
      • Vars
        • S(h);P_SPINR(g),SBLOCK,XR(D)::S(B),XP(c)
      • Refutation
        • P(e);XR(D)
    • Try
      • Q(F);CHECK
      • Vars
        • S(h);P_SPINR(g),SBLOCK,XQ(F)::S(B),XP(c)
      • Refutation
        • K(f);P-FLIGHT,XQ(F)
  • Actual
    • R(D);
    • Threat
      • QAB1(F),XB(i)
    • Vars
      • K(f);P_SPINS(h),S_FLIGHT::B(A)
      • R(g);N_GUARD,P_SPINS(h)::QAB1(F),XR(g)
      • R(g);P_SPINS(h),SBLOCK::QAR1(F)
      • S(h);N_GUARD,P_SPINR(g),SBLOCK::S(B),XP(c)
      • S(h);OGATE,P_SPINR(g),SBLOCK::B(A)
      • S(h);P_SPINR(g)::B(A)
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