MESON Chess Problem Database

Problem Display
PID: 194279 (4N3/3B4/5Kp1/nnpk4/4pR2/3P4/2N5/8 w - - 0 1)

Janet, Frank

Pittsburgh Gazette-Times, 1917

4N3/3B4/5Kp1/nnpk4/4pR2/3P4/2N5/8

#2

6 + 6

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Sc4
      • 2.dxe4#
    • 1...Sc6
      • 2.Be6#
    • 1...Sd4
      • 2.Se3#
    • 1...Sd6
      • 2.Sc7#
    • 1...exd3
      • 2.Se3#
    • 1...e3
      • 2.Sxe3#
    • 1...g5
      • 2.Rf5#
  • Tries
    • 1.Bxb5?
      • threat
        • 2.dxe4#
      • 1...exd3
        • 2.Se3#
      • 1...e3
        • 2.Sxe3#
      • 1...c4!
    • 1.Rxe4?
      • threat
        • 2.Se3#
        • 2.Re5#
      • 1...c4
        • 2.Re5#
      • 1...Sc6
        • 2.Se3#
        • 2.Be6#
      • 1...Sc4!
  • Keys
    • 1.Rg4!
      • threat
        • 2.Rg5#
      • 1...exd3
        • 2.Se3#
      • 1...Sc4
        • 2.dxe4#
      • 1...Sc6
        • 2.Be6#
      • 1...Sd4
        • 2.Se3#
      • 1...Sd6
        • 2.Sc7#
      • 1...g5
        • 2.Rxg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 1
  • Sets
    • S(b);SBLOCK::P(B),XP(a)
    • S(b);SBLOCK::B(E)
    • S(c);SBLOCK::S(A)
    • S(c);N_GUARD,SBLOCK::S(F)
    • P(a);XP(B)::S(A)
    • P(a);::S(A),XP(a)
    • P(f);N_GUARD::R(C)
  • Tries
    • Try
      • B(E);XS(c)
      • Threat
        • P(B),XP(a)
      • Vars
        • P(a);XP(B)::S(A)
        • P(a);::S(A),XP(a)
      • Refutation
        • P(d);
    • Try
      • R(C);XP(a)
      • Threat
        • DUALS(2)
      • Vars
        • P(d);::R1(C)
      • Refutation
        • S(b);
  • Actual
    • R(C);
    • Threat
      • R(C)
    • Vars
      • P(a);XP(B)::S(A)
      • S(b);SBLOCK::P(B),XP(a)
      • S(b);SBLOCK::B(E)
      • S(c);SBLOCK::S(A)
      • S(c);N_GUARD,SBLOCK::S(F)
      • P(f);::R(C),XP(f)
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