MESON Chess Problem Database

Problem Display
PID: 257751 (1BN5/3R1R1n/r1p3n1/1p6/4k1P1/1Bb5/4PP2/1b2N1K1 w - - 0 1)

Shire, David J

The Problemist, 2021

1BN5/3R1R1n/r1p3n1/1p6/4k1P1/1Bb5/4PP2/1b2N1K1

#2

10 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Ba2
      • 2.Bc2#
    • 1...Bc2
      • 2.Bxc2#
    • 1...Bd3
      • 2.exd3#
    • 1...Sf4
      • 2.Rxf4#
    • 1...Sh4
      • 2.Rf4#
    • 1...Se7
      • 2.Rf4#
    • 1...Sgf8
      • 2.Rf4#
    • 1...Sh8
      • 2.Rf4#
  • Tries
    • 1.Sc2?
      • threat
        • 2.f3#
      • 1...Bxc2
        • 2.Bxc2#
      • 1...Bd4
        • 2.Rxd4#
      • 1...Sh4
        • 2.Rf4#
      • 1...Se5
        • 2.Sd6#
      • 1...Sg5!
    • 1.Sd3?
      • threat
        • 2.Sc5#
      • 1...Bxd3
        • 2.exd3#
      • 1...Bd4
        • 2.Sd6#
      • 1...c5
        • 2.Sxc5#
      • 1...Bb4!
    • 1.Sd6+?
      • 1...Ke5
        • 2.Sf3#
      • 1...Kd4!
  • Keys
    • 1.Sf3!
      • threat
        • 2.Sd6#
      • 1...Bb4
        • 2.Rd4#
      • 1...Be5
        • 2.Sd2#
      • 1...Bf6
        • 2.Sd2#
      • 1...Sf6
        • 2.Sg5#
      • 1...c5
        • 2.Bd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 8
  • Sets
    • B(a);N_GUARD::B(E)
    • B(a);N_GUARD::B(E),XB(a)
    • B(a);OGATE::P(C),XB(a)
    • S(g);N_GUARD::R1(H),XS(g)
    • S(g);N_GUARD::R1(H)
  • Tries
    • Try
      • S(A);
      • Threat
        • P(D)
      • Vars
        • B(a);OGATE,XS(A)::B(E),XB(a)
        • B(b);N_GUARD,P_PINP(D)::R1(G),XB(b)
        • S(g);N_GUARD::R1(H)
        • S(g);SBLOCK::S(J)
      • Refutation
        • S(h);
    • Try
      • S(A);
      • Threat
        • S(A)
      • Vars
        • B(a);OGATE,XS(A)::P(C),XB(a)
        • B(b);P_PINP(D),SBLOCK::S(J)
        • P(f);::S(A),XP(f)
      • Refutation
        • B(b);
    • Try
      • S(J);CHECK
      • Vars
        • K(c);P-FLIGHT::S(A)
      • Refutation
        • K(c);P-FLIGHT
  • Actual
    • S(A);
    • Threat
      • S(J)
    • Vars
      • B(b);N_GUARD::R1(G)
      • B(b);N_GUARD::S(A)
      • S(h);N_GUARD::S(A)
      • P(f);N_GUARD::B(E)
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