MESON Chess Problem Database

Problem Display
PID: 6828 (6BB/1q2p3/r4pK1/1R1pP3/3kN2R/2pP4/b1P2P2/3Q4 w - - 0 1)

Howard, Kenneth Samuel

3rd HM., Western Morning News, 1933

6BB/1q2p3/r4pK1/1R1pP3/3kN2R/2pP4/b1P2P2/3Q4

#2

11 + 8

5089 The Enjoyment of Chess Problems 1943
5064 100 Years of the American Two-move Chess Problem 1962
3098 FIDE Album (1914-1944) (I) 1971

SOLUTION

  • SOUND
  • Sets
    • 1...Kxe5
      • 2.d4#
    • 1...dxe4
      • 2.dxe4#
    • 1...fxe5+
      • 2.Sd6#
    • 1...f5+
      • 2.e6#
  • Tries
    • 1.Qe1?
      • threat
        • 2.Sd2#
        • 2.Sxc3#
        • 2.Sg3#
        • 2.Sc5#
        • 2.Sg5#
        • 2.Sd6#
        • 2.Sxf6#
        • 2.Qxc3#
      • 1...fxe5+
        • 2.Sd6#
      • 1...f5+
        • 2.e6#
      • 1...Kxe5
        • 2.Qxc3#
      • 1...Qxb5
        • 2.Qxc3#
      • 1...dxe4
        • 2.Qe3#
      • 1...Qc6
        • 2.Sd2#
        • 2.Sxc3#
        • 2.Sg3#
        • 2.Sc5#
        • 2.Sg5#
        • 2.Sd6#
        • 2.Sxf6#
      • 1...Qc7
        • 2.Sd2#
        • 2.Sxc3#
        • 2.Sg3#
        • 2.Sc5#
        • 2.Sg5#
        • 2.Sd6#
        • 2.Sxf6#
      • 1...Qd7
        • 2.Qxc3#
      • 1...Ra3
        • 2.Sd2#
        • 2.Sxc3#
        • 2.Sg3#
        • 2.Sc5#
        • 2.Sg5#
        • 2.Sd6#
        • 2.Sxf6#
      • 1...Rc6
        • 2.Sd2#
        • 2.Sxc3#
        • 2.Sg3#
        • 2.Sc5#
        • 2.Sg5#
        • 2.Sd6#
        • 2.Sxf6#
      • 1...Rd6
        • 2.Sd2#
        • 2.Sxc3#
        • 2.Sg3#
        • 2.Sc5#
        • 2.Sg5#
        • 2.Sxd6#
        • 2.Sxf6#
        • 2.Qxc3#
      • 1...Qc8!
  • Keys
    • 1.Qg1!
      • threat
        • 2.f4#
      • 1...fxe5+
        • 2.Sd6#
      • 1...f5+
        • 2.e6#
      • 1...Kxe5
        • 2.f4#
      • 1...dxe4
        • 2.f3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • K(c);OGATE,P_SPINP(d),S_FLIGHT,XP(H)::P(D)
    • P(d);OGATE,P_SPINP(d),XS(E)::QAR(A)+P(D),XP(d)
    • P(f);CHECK,P_SPINP(f),XP(H)::R(F)+S(E)
    • P(f);CHECK::B(K)+P(H)
  • Tries
    • Try
      • Q(A);
      • Threat
        • DUALS(8)
      • Vars
        • P(f);CHECK,P_SPINP(f),XP(H)::R(F)+S(E)
        • P(f);CHECK::B(K)+P(H)
        • K(c);P_SPINP(d),S_FLIGHT,XP(H)::QAB(A),XP(b)
        • Q(g);XR(G)::QAB1(A),XP(b)
        • P(d);P_SPINP(d),XS(E)::QAB1(A)
        • Q(g);::QAB1(A),XP(b)
      • Refutation
        • Q(g);
  • Actual
    • Q(A);
    • Threat
      • QAB(A)+P(C)
    • Vars
      • P(f);CHECK,P_SPINP(f),XP(H)::R(F)+S(E)
      • P(f);CHECK::B(K)+P(H)
      • K(c);P_SPINP(d),S_FLIGHT,XP(H)::P(C)
      • P(d);P_SPINP(d),XS(E)::QAB(A)+P(C)
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