MESON Chess Problem Database

Problem Display
PID: 144850 (2r5/2pR3B/8/3N4/2pk1P2/8/6n1/2Q3K1 w - - 0 1)

Gold, Samuel

Source?, 0000

2r5/2pR3B/8/3N4/2pk1P2/8/6n1/2Q3K1

#2

6 + 5

14868 Pirnie Collection 2012

SOLUTION

  • SOUND
  • Sets
    • 1...Se1
      • 2.Qe3#
    • 1...Se3
      • 2.Qxe3#
    • 1...Sxf4
      • 2.Qe3#
    • 1...Sh4
      • 2.Qe3#
    • 1...c3
      • 2.Qxc3#
    • 1...c5
      • 2.Sc3#
      • 2.Se3#
      • 2.Sb4#
      • 2.Sb6#
      • 2.Sf6#
      • 2.Sc7#
      • 2.Se7#
      • 2.Qd2#
      • 2.Qd1#
      • 2.Qc3#
  • Tries
    • 1.Qb2+?
      • 1...c3
        • 2.Qxc3#
        • 2.Qb4#
      • 1...Kc5!
    • 1.Qa3?
      • threat
        • 2.Se3#
        • 2.Sb6#
        • 2.Sf6#
        • 2.Sxc7#
        • 2.Se7#
      • 1...Sxf4
        • 2.Qe3#
      • 1...c3
        • 2.Qb4#
        • 2.Qxc3#
      • 1...Se3
        • 2.Sxe3#
        • 2.Qxe3#
      • 1...c5
        • 2.Se3#
        • 2.Sb4#
        • 2.Sb6#
        • 2.Sf6#
        • 2.Sc7#
        • 2.Se7#
        • 2.Qc3#
      • 1...c6
        • 2.Se3#
        • 2.Sb6#
        • 2.Sf6#
        • 2.Sc7#
        • 2.Se7#
      • 1...Rd8!
    • 1.Qa1+?
      • 1...c3
        • 2.Qxc3#
      • 1...Kc5!
  • Keys
    • 1.Bd3!
      • threat
        • 2.Qxc4#
      • 1...Kxd3
        • 2.Sc3#
      • 1...Kc5
        • 2.Qxc4#
      • 1...Sxf4
        • 2.Qe3#
      • 1...cxd3
        • 2.Sf6#
      • 1...Se3
        • 2.Qxe3#
      • 1...c3
        • 2.Qxc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • S(a);N_GUARD::QAB1(A)
    • S(a);N_GUARD::QAB1(A),XS(a)
    • S(a);N_GUARD,XP(C)::QAB1(A)
    • P(b);::QAB1(A),XP(b)
  • Tries
    • Try
      • Q(A);CHECK
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(A);
      • Threat
        • DUALS(5)
      • Vars
        • S(a);N_GUARD,XP(C)::QAB1(A)
      • Refutation
        • R(e);
    • Try
      • Q(A);CHECK
      • Vars
        • P(b);P_SPINP(b)::QAB1(A),XP(b)
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • B(F);
    • Threat
      • QAR1(A),XP(b)
    • Vars
      • K(c);P-FLIGHT,XB(F)::R(E)+S(D)
      • K(c);P_SPINP(b),S_FLIGHT::QAR1(A),XP(b)
      • S(a);N_GUARD,XP(C)::QAB1(A)
      • P(b);SBLOCK,XB(F)::R(E)+S(D)
      • S(a);N_GUARD::QAB1(A),XS(a)
      • P(b);::QAB1(A),XP(b)
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