MESON Chess Problem Database

Problem Display
PID: 153665 (2B3K1/b1N5/2N5/nQ1pp1PR/r2n1k2/R4P2/q1pPp2P/2Bbr3 w - - 0 1)

Harley, Brian

American Chess Bulletin, 1946

2B3K1/b1N5/2N5/nQ1pp1PR/r2n1k2/R4P2/q1pPp2P/2Bbr3

#2

12 + 12

15290 Harley Scrapbook 2015

SOLUTION

  • SOUND
  • Sets
    • 1...Qb1
      • 2.Sxd5#
    • 1...Qa1
      • 2.Sxd5#
    • 1...Qb2
      • 2.Sxd5#
    • 1...Rc4
      • 2.Sxd5#
    • 1...Sxb5
      • 2.d4#
    • 1...Sf5
      • 2.Se6#
    • 1...Sdxc6
      • 2.d4#
    • 1...Sc4
      • 2.Sxd5#
  • Tries
    • 1.Se6+?
      • 1...Kf5
        • 2.Se7#
      • 1...Sxe6!
  • Keys
    • 1.Qxd5!
      • threat
        • 2.d3#
      • 1...Qxd5+
        • 2.Sxd5#
      • 1...Qxa3
        • 2.Qe4#
      • 1...Sxf3
        • 2.Rxf3#
      • 1...Sdxc6
        • 2.d4#
      • 1...Se6
        • 2.Qxe5#
      • 1...Qb1
        • 2.Qe4#
        • 2.Qxe5#
      • 1...Qa1
        • 2.Qe4#
        • 2.Qxe5#
      • 1...Qb2
        • 2.Qe4#
        • 2.Qxe5#
      • 1...Sdb3
        • 2.Qf7#
      • 1...Sb5
        • 2.d4#
      • 1...Sf5
        • 2.Se6#
      • 1...Sab3
        • 2.Qe4#
      • 1...Sc4
        • 2.Qe4#
      • 1...e4
        • 2.Rh4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 7
    • REMOVED MATES = 4
  • Sets
    • Q(c);N_GUARD::S(J),XP(j)
    • R(f);S_CUTQ(c)::S(J),XP(j)
    • S(g);OGATE,XQ(F)::B(A)+P(B)
    • S(g);N_GUARD,SBLOCK::S(J)
    • S(g);OGATE,XS(I)::B(A)+P(B)
    • S(i);S_CUTQ(c)::S(J),XP(j)
  • Tries
    • Try
      • S(J);CHECK
      • Vars
        • K(h);P-FLIGHT::S(I)
      • Refutation
        • S(g);XS(J)
  • Actual
    • Q(F);P_SPINQ(F),XP(j)
    • Threat
      • B(A)+P(B)
    • Vars
      • Q(c);CHECK,XQ(F)::S(J),XQ(c)
      • Q(c);N_PINQ(F),XR(D)::QAR1(F)
      • S(g);OGATE,XP(E)::R1(D),XS(g)
      • S(g);OGATE,XS(I)::B(A)+P(B)
      • S(g);N_PINQ(F)::QAB1(F),XP(k)
      • S(g);N_GUARD,N_PINQ(F),S_CUTQ(c)::QAR(F)
      • S(g);OGATE::B(A)+P(B)
      • S(g);N_GUARD,SBLOCK::S(J)
      • S(i);N_PINQ(F)::QAR1(F)
      • P(k);::R(H)
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