MESON Chess Problem Database

Problem Display
PID: 193416 (r2k1N2/1B1rp2K/nP1R1Np1/4Q1B1/2R5/7b/6n1/8 w - - 0 1)

Janet, Frank

Pittsburgh Gazette-Times, 1914

r2k1N2/1B1rp2K/nP1R1Np1/4Q1B1/2R5/7b/6n1/8

#2

9 + 8

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Ra7
      • 2.Rc8#
    • 1...Rc8
      • 2.Rxc8#
    • 1...Be6
      • 2.Sxe6#
    • 1...Sc7
      • 2.bxc7#
    • 1...Sb8
      • 2.Rc8#
    • 1...exd6+
      • 2.S6xd7#
    • 1...e6+
      • 2.Rxd7#
  • Tries
    • 1.S6xd7?
      • threat
        • 2.Qxe7#
      • 1...Ke8
        • 2.Qxe7#
      • 1...Be6!
  • Keys
    • 1.Re4!
      • threat
        • 2.Qxe7#
      • 1...exd6+
        • 2.S6xd7#
      • 1...exf6+
        • 2.Qe7#
      • 1...e6+
        • 2.Rxd7#
      • 1...Be6
        • 2.Sxe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 4
  • Sets
    • R(g);N_GUARD::R1(A)
    • R(g);N_GUARD::R1(A),XR(g)
    • B(b);N_GUARD::S(I),XB(b)
    • S(c);OGATE::P(D),XS(c)
    • S(c);S_CUTR(g)::R1(A)
    • P(f);CHECK,N_SPINR(e),XR(E)::B(C)+S(F),XR(e)
    • P(f);CHECK,S_CUTB(b)::R1(E),XR(e)
  • Tries
    • Try
      • S(F);P_PINP(f),XR(e)
      • Threat
        • QAB1(B),XP(f)
      • Vars
        • K(h);P-FLIGHT::QAR1(B),XP(f)
      • Refutation
        • B(b);
  • Actual
    • R(A);
    • Threat
      • QAB1(B),XP(f)
    • Vars
      • P(f);CHECK,N_SPINR(e),XR(E)::B(C)+S(F),XR(e)
      • P(f);CHECK,P_SPINP(f),XS(F)::QAB1(B)
      • P(f);CHECK,S_CUTB(b)::R1(E),XR(e)
      • B(b);N_GUARD::S(I),XB(b)
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