MESON Chess Problem Database

Problem Display
PID: 189818 (5R1K/3n4/3R4/4p2B/bp2kP2/1P4b1/2PP4/Q2n4 w - - 0 1)

Woodard, Eugene

Pittsburgh Gazette-Times, 1912

5R1K/3n4/3R4/4p2B/bp2kP2/1P4b1/2PP4/Q2n4

#2

9 + 7

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Sb2
      • 2.Qh1#
    • 1...Sf2
      • 2.Qe1#
    • 1...Sc3
      • 2.Qh1#
    • 1...Se3
      • 2.d3#
    • 1...Sc5
      • 2.Qxe5#
    • 1...Sb6
      • 2.Qxe5#
    • 1...Sf6
      • 2.Qxe5#
    • 1...Sb8
      • 2.Qxe5#
    • 1...Sxf8
      • 2.Qxe5#
    • 1...exf4
      • 2.Qd4#
  • Tries
    • 1.Rd3?
      • threat
        • 2.Bf3#
        • 2.Bg6#
      • 1...Sxf8
        • 2.Qxe5#
      • 1...Sf6
        • 2.Qxe5#
      • 1...Se3!
    • 1.Rxd7?
      • threat
        • 2.Qxe5#
      • 1...exf4
        • 2.Qd4#
      • 1...Sb2
        • 2.Qh1#
      • 1...Sc3
        • 2.Qh1#
      • 1...Bxf4!
  • Keys
    • 1.c4!
      • threat
        • 2.Qb1#
      • 1...Bxb3
        • 2.Qa8#
      • 1...Sxf8
        • 2.Qxe5#
      • 1...exf4
        • 2.Qd4#
      • 1...bxc4 ep
        • 2.Qxa4#
      • 1...Sf6
        • 2.Qxe5#
      • 1...Sb2
        • 2.Qh1#
      • 1...Sf2
        • 2.Qe1#
      • 1...Sc3
        • 2.Qh1#
      • 1...Se3
        • 2.d3#
      • 1...Sc5
        • 2.Qxe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • S(a);OGATE::QAB(A)
    • S(a);OGATE::QAR(A)
    • S(a);SBLOCK::P(C)
    • S(g);N_GUARD::QAR1(A),XP(f)
    • S(g);N_GUARD,XR(H)::QAR1(A),XP(f)
    • P(f);N_GUARD,XP(E)::QAR1(A)
  • Tries
    • Try
      • R(G);
      • Threat
        • DUALS(2)
      • Vars
        • S(g);N_GUARD,XR(H)::QAR1(A),XP(f)
        • S(g);N_GUARD::QAR1(A),XP(f)
      • Refutation
        • S(a);
    • Try
      • R(G);XS(g)
      • Threat
        • QAR1(A),XP(f)
      • Vars
        • P(f);N_GUARD,XP(E)::QAR1(A)
        • S(a);OGATE::QAB(A)
      • Refutation
        • B(b);XP(E)
  • Actual
    • P(B);
    • Threat
      • QAB(A)
    • Vars
      • B(c);OGATE,XP(D)::QAB(A)
      • S(g);N_GUARD,XR(H)::QAR1(A),XP(f)
      • P(f);N_GUARD,XP(E)::QAR1(A)
      • P(d);EP,OGATEB,XP(B)::QAR(A),XB(c)
      • S(g);N_GUARD::QAR1(A),XP(f)
      • S(a);OGATE::QAB(A)
      • S(a);OGATE::QAR(A)
      • S(a);SBLOCK::P(C)
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