MESON Chess Problem Database

Problem Display
PID: 10040 (4B3/4Q1p1/p3p3/3PNP2/2p1k1N1/r3P2P/2P3K1/4R3 w - - 0 1)

Driver, John Edward

2nd HM., Problem TT, 1961

4B3/4Q1p1/p3p3/3PNP2/2p1k1N1/r3P2P/2P3K1/4R3

#2

11 + 6

3174 The Two-move Chess Problem Tradition and Development 1966

SOLUTION

  • SOUND
  • Sets
    • 1...Kxd5
      • 2.Bc6#
    • 1...Kxf5
      • 2.Bg6#
  • Tries
    • 1.Sf3?
      • threat
        • 2.Qxe6#
      • 1...Kxd5
        • 2.e4#
      • 1...Kxf5
        • 2.Qxe6#
      • 1...e5
        • 2.Qxe5#
      • 1...Rxe3!
    • 1.Qxe6?
      • threat
        • 2.Sf2#
        • 2.Sd3#
        • 2.Sf3#
        • 2.Sxc4#
        • 2.Sc6#
        • 2.Sg6#
        • 2.Sd7#
        • 2.Sf7#
      • 1...Rd3
        • 2.Sf2#
        • 2.Sxd3#
        • 2.Sf3#
        • 2.Sxc4#
        • 2.Sc6#
        • 2.Sg6#
        • 2.Sd7#
        • 2.Sf7#
      • 1...c3
        • 2.Sf2#
        • 2.Sd3#
        • 2.Sf3#
        • 2.Sc4#
        • 2.Sc6#
        • 2.Sg6#
        • 2.Sd7#
        • 2.Sf7#
      • 1...g6
        • 2.Sf2#
        • 2.Sf6#
        • 2.Sd3#
        • 2.Sf3#
        • 2.Sxc4#
        • 2.Sc6#
        • 2.Sxg6#
        • 2.Sd7#
        • 2.Sf7#
      • 1...Rxe3!
  • Keys
    • 1.Sd3!
      • threat
        • 2.Qxe6#
      • 1...Kxd5
        • 2.Qxe6#
      • 1...Kxf5
        • 2.e4#
      • 1...e5
        • 2.Qxe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(c);OGATEB,S_FLIGHT,XP(G)::B(K)
    • K(c);OGATEB,S_FLIGHT,XP(I)::B(K)
  • Tries
    • Try
      • S(H);P_PINP(e)
      • Threat
        • QAR2(J),XP(e)
      • Vars
        • K(c);N_SPINP(e),OGATE,S_FLIGHT,XP(G)::P(D)
        • K(c);N_SPINP(e),S_FLIGHT,XP(I)::QAB1(J),XP(e)
        • P(e);OGATE::QAR1(J),XP(e)
      • Refutation
        • R(a);P_SPINR(a),XP(D)
    • Try
      • Q(J);XP(e)
      • Threat
        • DUALS(8)
      • Refutation
        • R(a);P_SPINR(a),XP(D)
  • Actual
    • S(H);P_PINP(e)
    • Threat
      • QAR2(J),XP(e)
    • Vars
      • K(c);N_SPINP(e),S_FLIGHT,XP(G)::QAB1(J),XP(e)
      • K(c);N_SPINP(e),OGATE,S_FLIGHT,XP(I)::P(D)
      • P(e);OGATE::QAR1(J),XP(e)
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