MESON Chess Problem Database

Problem Display
PID: 562 (B1r3Q1/1Rbp4/1p1pp3/1PNk1P2/P2pR1P1/3Np3/2K5/8 w - - 0 1)

Brotherton, David WA

3rd HM., The Observer, 1964

B1r3Q1/1Rbp4/1p1pp3/1PNk1P2/P2pR1P1/3Np3/2K5/8

#2

11 + 9

136 Problem Observer 2006

SOLUTION

  • SOUND
  • Keys
    • 1.Sxe6!
      • threat
        • 2.Rxd4#
      • 1...Bb8+
        • 2.Rc7#
      • 1...Bd8+
        • 2.Sec5#
      • 1...Kc4
        • 2.Rxd4#
      • 1...Kxe4
        • 2.Sg5#
      • 1...dxe6
        • 2.Qxe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Actual
    • S(G);XP(f)
    • Threat
      • R1(D),XP(b)
    • Vars
      • B(g);CHECK,S_CUTR(i)::B(J)+R(I)
      • B(g);CHECK,S_CUTR(i)::QAB(K)+S(G)
      • K(c);P_SPINP(b),S_FLIGHT::R1(D),XP(b)
      • K(c);S_FLIGHT,XR(D)::S(G)
      • P(h);OGATE,P_SPINP(h),XS(G)::QAB1(K),XP(h)
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