MESON Chess Problem Database

Problem Display
PID: 137159 (1n1N1bq1/B2R2Q1/b1B1pn1r/2Pp3p/1K1k4/2N1R3/3P2r1/8 w - - 0 1)

Beechey, H

Australasian Chess Magazine, 1919

1n1N1bq1/B2R2Q1/b1B1pn1r/2Pp3p/1K1k4/2N1R3/3P2r1/8

#2

10 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Qh7
      • 2.Sxe6#
    • 1...Qxg7
      • 2.Sxe6#
    • 1...Qh8
      • 2.Sxe6#
    • 1...Bb5
      • 2.Sxb5#
    • 1...Bb7
      • 2.Sb5#
    • 1...Bc8
      • 2.Sb5#
    • 1...Bxc5+
      • 2.Bxc5#
    • 1...Bd6
      • 2.cxd6#
    • 1...Sxc6+
      • 2.Sxc6#
  • Tries
    • 1.Qxf6+?
      • 1...e5
        • 2.Qxe5#
      • 1...Rxf6!
  • Keys
    • 1.Bb5!
      • threat
        • 2.Re4#
      • 1...Bxc5+
        • 2.Bxc5#
      • 1...Sc6+
        • 2.Sxc6#
      • 1...Qxg7
        • 2.Sxe6#
      • 1...Rxg7
        • 2.Se2#
      • 1...Bxb5
        • 2.Sxb5#
      • 1...Bxg7
        • 2.c6#
      • 1...Sxd7
        • 2.Sc6#
      • 1...Qh7
        • 2.Sxe6#
      • 1...Re2
        • 2.Sxe2#
      • 1...Rg4
        • 2.Se2#
      • 1...Bd6
        • 2.cxd6#
      • 1...e5
        • 2.Rd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 3
  • Sets
    • Q(k);N_GUARD::S(J),XP(f)
    • Q(k);N_GUARD,N_SPINS(g),XQ(I)::S(J),XP(f)
    • B(e);N_GUARD::S(B),XB(e)
    • B(e);N_GUARD::S(B)
    • B(j);CHECK,OGATE,P_SPINB(j),XP(E)::B(G),XB(j)
    • B(j);N_SPINP(c)::B(G)+P(E),XB(j)
    • S(i);CHECK,XB(F)::S(J),XS(i)
  • Tries
    • Try
      • Q(I);CHECK,XS(g)
      • Vars
        • P(f);::QAB1(I),XP(f)
      • Refutation
        • R(h);XQ(I)
  • Actual
    • B(F);
    • Threat
      • R1(C)
    • Vars
      • B(j);CHECK,OGATE,P_SPINB(j),XP(E)::B(G),XB(j)
      • S(i);CHECK,N_GUARD::S(J),XS(i)
      • Q(k);N_GUARD,N_SPINS(g),XQ(I)::S(J),XP(f)
      • R(a);N_GUARD,N_SPINS(g),XQ(I)::S(B)
      • B(e);XB(F)::S(B),XB(e)
      • B(j);N_PINP(E),N_SPINS(g),XQ(I)::B(G)+P(E)
      • S(i);N_GUARD,N_SPINP(c),XR(H)::S(J)
      • Q(k);N_GUARD::S(J),XP(f)
      • R(a);N_GUARD::S(B),XR(a)
      • R(a);N_GUARD::S(B)
      • B(j);N_SPINP(c)::B(G)+P(E),XB(j)
      • P(f);N_SPINS(g),SBLOCK::R1(C)
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