MESON Chess Problem Database

Problem Display
PID: 158586 (B6B/3b2b1/2N3Q1/3p1n2/R3pk1N/5p2/p6K/4R3 w - - 0 1)

Sydenham, Colin Peter

The Problemist, 1974

B6B/3b2b1/2N3Q1/3p1n2/R3pk1N/5p2/p6K/4R3

#2

8 + 8

15513 Selected Chess Problems of Colin Sydenham 2015

SOLUTION

  • SOUND
  • Sets
    • 1...Bxc6
      • 2.Qxf5#
    • 1...Be8
      • 2.Qxf5#
    • 1...Be5
      • 2.Bxe5#
    • 1...Bh6
      • 2.Be5#
    • 1...Bf8
      • 2.Be5#
    • 1...Se3
      • 2.Qg3#
    • 1...Sg3
      • 2.Qxg3#
    • 1...Sd4
      • 2.Qg3#
    • 1...Sd6
      • 2.Qg3#
    • 1...Sh6
      • 2.Qg3#
    • 1...Se7
      • 2.Qg3#
  • Keys
    • 1.Sb4!
      • threat
        • 2.Sd3#
      • 1...Ke5
        • 2.Sd3#
      • 1...Bxa4
        • 2.Qxf5#
      • 1...Bb5
        • 2.Qxf5#
      • 1...Bd4
        • 2.Sxd5#
      • 1...Sd4
        • 2.Qg3#
      • 1...d4
        • 2.Rxe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 10
  • Sets
    • B(g);N_GUARD,XS(E)::QAR1(F),XS(f)
    • B(g);N_GUARD::QAR1(F),XS(f)
    • B(h);OGATE::B(H),XB(h)
    • B(h);OGATE::B(H)
    • S(f);N_GUARD::QAB1(F)
    • S(f);N_GUARD::QAB1(F),XS(f)
    • S(f);N_GUARD,N_SPINP(c)::QAB1(F)
  • Actual
    • S(E);N_PINP(c)
    • Threat
      • S(E)
    • Vars
      • K(d);P_SPINB(h),P_SPINP(c),S_FLIGHT::S(E)
      • B(g);N_GUARD,XR(C)::QAR1(F),XS(f)
      • B(g);N_GUARD::QAR1(F),XS(f)
      • B(h);::S(E),XP(e)
      • S(f);N_GUARD::QAB1(F)
      • P(e);N_GUARD::R1(A),XP(c)
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