MESON Chess Problem Database

Problem Display
PID: 187776 (8/3p3Q/1pR5/1n1k4/2p3P1/B4N2/8/6K1 w - - 0 1)

Prichard, AJ

The Times, 1909

8/3p3Q/1pR5/1n1k4/2p3P1/B4N2/8/6K1

#2

6 + 5

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Sc3
      • 2.Rd6#
    • 1...Sd4
      • 2.Rd6#
    • 1...Sd6
      • 2.Rxd6#
    • 1...Sa7
      • 2.Rd6#
    • 1...Sc7
      • 2.Rd6#
    • 1...dxc6
      • 2.Qf5#
  • Tries
    • 1.Rxb6?
      • threat
        • 2.Qf5#
      • 1...Sd6
        • 2.Rxd6#
      • 1...Sd4
        • 2.Rd6#
      • 1...c3!
    • 1.Rf6?
      • threat
        • 2.Qf5#
      • 1...Sd6
        • 2.Rxd6#
      • 1...d6
        • 2.Qb7#
      • 1...Sd4
        • 2.Rd6#
      • 1...c3!
    • 1.Rh6?
      • threat
        • 2.Qf5#
      • 1...Sd6
        • 2.Rxd6#
      • 1...d6
        • 2.Qb7#
      • 1...Sd4
        • 2.Rd6#
      • 1...c3!
  • Keys
    • 1.Re6!
      • threat
        • 2.Qe4#
        • 2.Qf5#
      • 1...Kxe6
        • 2.Qf5#
      • 1...Sxa3
        • 2.Qf5#
      • 1...dxe6
        • 2.Qb7#
      • 1...Sd6
        • 2.Rxd6#
      • 1...c3
        • 2.Qe4#
      • 1...d6
        • 2.Qe4#
      • 1...Sc3
        • 2.Rd6#
        • 2.Qf5#
        • 2.Qxd7#
      • 1...Sd4
        • 2.Rd6#
        • 2.Qe4#
        • 2.Qxd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 5
  • Sets
    • S(b);N_GUARD::R1(E)
    • S(b);N_GUARD::R1(E),XS(b)
    • P(e);SBLOCK,XR(E)::QAR2(F)
  • Tries
    • Try
      • R(E);XP(d)
      • Threat
        • QAR2(F)
      • Vars
        • S(b);N_GUARD::R1(E),XS(b)
        • S(b);N_GUARD::R1(E)
      • Refutation
        • P(a);
    • Try
      • R(E);
      • Threat
        • QAR2(F)
      • Vars
        • S(b);N_GUARD::R1(E),XS(b)
        • P(e);OGATE::QAB(F)
        • S(b);N_GUARD::R1(E)
      • Refutation
        • P(a);
    • Try
      • R(E);
      • Threat
        • QAR2(F)
      • Vars
        • S(b);N_GUARD::R1(E),XS(b)
        • P(e);OGATE::QAB(F)
        • S(b);N_GUARD::R1(E)
      • Refutation
        • P(a);
  • Actual
    • R(E);
    • Threat
      • DUALS(2)
    • Vars
      • K(c);S_FLIGHT,XR(E)::QAB1(F)
      • S(b);XB(B)::QAR2(F)
      • P(e);OGATE,SBLOCK,XR(E)::QAB(F)
      • S(b);N_GUARD::R1(E),XS(b)
      • P(a);::QAB1(F)
      • P(e);::QAB1(F)
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