MESON Chess Problem Database

Problem Display
PID: 24808 (8/B7/3n1P2/R2n3N/4k3/1N2b2B/4Q3/7K w - - 0 1)

Youngs, Joe Casey

1st Prize, Providence Journal, 1947

8/B7/3n1P2/R2n3N/4k3/1N2b2B/4Q3/7K

#2

8 + 4

742 Problem (Zagreb) 1951
3105 FIDE Album (1945-1955) 1964
3674 As in all Arts 1996
3310 2345 Chess Problems 1997
56 The Problemist 2004

SOLUTION

  • SOUND
  • Sets
    • 1...Sc3
      • 2.Sd2#
      • 2.Bg2#
      • 2.Qxe3#
    • 1...Sb4
      • 2.Sd2#
      • 2.Bg2#
      • 2.Qxe3#
    • 1...Sf4
      • 2.Sd2#
      • 2.Sg3#
      • 2.Qxe3#
    • 1...Sb6
      • 2.Bg2#
    • 1...Sxf6
      • 2.Sd2#
      • 2.Bg2#
      • 2.Qxe3#
    • 1...Sc7
      • 2.Sd2#
      • 2.Bg2#
      • 2.Qxe3#
    • 1...Se7
      • 2.Sd2#
      • 2.Bg2#
      • 2.Qxe3#
  • Tries
    • 1.Qc2+?
      • 1...Kf3
        • 2.Qg2#
      • 1...Ke5!
    • 1.Qg2+?
      • 1...Ke5
        • 2.Rxd5#
        • 2.Qxd5#
      • 1...Kd3!
  • Keys
    • 1.Bb8!
      • 1...Ke5
        • 2.Qxe3#
      • 1...Sxf6
        • 2.Bg2#
      • 1...Sc4
        • 2.Sg3#
      • 1...Sc3
        • 2.Bg2#
      • 1...Sb4
        • 2.Bg2#
      • 1...Sf4
        • 2.Sg3#
      • 1...Sb6
        • 2.Bg2#
      • 1...Sc7
        • 2.Bg2#
      • 1...Se7
        • 2.Bg2#
      • 1...Sb5
        • 2.Sg3#
      • 1...Sf5
        • 2.Bg2#
      • 1...Sb7
        • 2.Sg3#
      • 1...Sf7
        • 2.Sg3#
      • 1...Sc8
        • 2.Sg3#
      • 1...Se8
        • 2.Sg3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 14
    • REMOVED MATES = 0
  • Sets
    • S(c);::B(D)
  • Tries
    • Try
      • Q(B);CHECK,N_PINB(a)
      • Vars
        • K(b);S_FLIGHT::QAB1(B)
      • Refutation
        • K(b);P-FLIGHT,P_SPINS(c)
    • Try
      • Q(B);CHECK,N_PINB(a)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • B(H);
    • Vars
      • K(b);P-FLIGHT,P_SPINS(c)::QAR2(B),XB(a)
      • S(c);XP(G)::B(D)
      • S(d);::S(F)
      • S(c);::B(D)
      • S(c);SBLOCK::S(F)
      • S(d);SBLOCK::B(D)
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