MESON Chess Problem Database

Problem Display
PID: 222575 (6n1/3Bp3/3pN3/1n1k1p2/K4P2/1P1pb3/4N3/Q3R3 w - - 0 1)

Hirsebrei, E

New Orleans Times-Democrat, 1883

6n1/3Bp3/3pN3/1n1k1p2/K4P2/1P1pb3/4N3/Q3R3

#2

8 + 8

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Bxf4
      • 2.S2xf4#
    • 1...Sa3
      • 2.Sc3#
    • 1...Sc3+
      • 2.Sxc3#
    • 1...Sd4
      • 2.Sc3#
    • 1...Sa7
      • 2.Sc3#
    • 1...Sc7
      • 2.Sc3#
  • Tries
    • 1.Kxb5?
      • threat
        • 2.Sc3#
        • 2.Qa8#
      • 1...Bxf4
        • 2.Sc3#
        • 2.S2xf4#
        • 2.Qd4#
      • 1...dxe2
        • 2.Qa8#
      • 1...Bd2
        • 2.Qd4#
        • 2.Qa8#
      • 1...Bd4
        • 2.Qxd4#
        • 2.Qa8#
      • 1...Ba7
        • 2.Sc3#
      • 1...Ke4!
    • 1.Qd4+?
      • 1...Sxd4
        • 2.Sc3#
      • 1...Bxd4!
    • 1.Qg7?
      • threat
        • 2.Qg2#
      • 1...Sc3+
        • 2.Sxc3#
      • 1...Ke4
        • 2.Qg2#
      • 1...Bxf4
        • 2.S2xf4#
      • 1...Sd4
        • 2.Sc3#
      • 1...Sf6!
  • Keys
    • 1.Qh8!
      • threat
        • 2.Qh1#
      • 1...Sc3+
        • 2.Sxc3#
      • 1...Ke4
        • 2.Qh1#
      • 1...Bxf4
        • 2.S2xf4#
      • 1...Sd4
        • 2.Sc3#
      • 1...Sf6
        • 2.Qa8#
      • 1...Sh6
        • 2.Qa8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • B(b);XP(F)::S(C),XB(b)
    • S(c);N_GUARD::S(C)
    • S(c);CHECK,N_GUARD::S(C),XS(c)
  • Tries
    • Try
      • K(E);S_FLIGHT,XS(c)
      • Threat
        • DUALS(2)
      • Vars
        • P(a);XS(C)::QAB(A)
        • B(b);::S(C)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • S(c);XQ(A)::S(C)
      • Refutation
        • B(b);XQ(A)
    • Try
      • Q(A);
      • Threat
        • QAB(A)
      • Vars
        • S(c);CHECK,N_GUARD::S(C),XS(c)
        • K(d);S_FLIGHT::QAB(A)
        • B(b);XP(F)::S(C),XB(b)
        • S(c);N_GUARD::S(C)
      • Refutation
        • S(h);
  • Actual
    • Q(A);
    • Threat
      • QAB(A)
    • Vars
      • S(c);CHECK,N_GUARD::S(C),XS(c)
      • K(d);S_FLIGHT::QAB(A)
      • B(b);XP(F)::S(C),XB(b)
      • S(c);N_GUARD::S(C)
      • S(h);OGATE::QAB(A)
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