MESON Chess Problem Database

Problem Display
PID: 160603 (2Q3N1/8/5K2/7k/6p1/8/2Rp4/8 w - - 0 1)

Lincoln, Robert A

British Chess Magazine, 2014

2Q3N1/8/5K2/7k/6p1/8/2Rp4/8

#2

4 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...d1Q
      • 2.Rh2#
    • 1...d1S
      • 2.Rh2#
    • 1...d1B
      • 2.Rh2#
    • 1...d1R
      • 2.Rh2#
    • 1...g3
      • 2.Qh3#
  • Tries
    • 1.Se7?
      • threat
        • 2.Qh8#
      • 1...Kh6
        • 2.Qh8#
      • 1...g3
        • 2.Qh3#
      • 1...Kh4!
    • 1.Ra2?
      • 1...d1Q
        • 2.Rh2#
      • 1...d1S
        • 2.Rh2#
      • 1...d1B
        • 2.Rh2#
      • 1...d1R
        • 2.Rh2#
      • 1...g3
        • 2.Qh3#
      • 1...Kh4!
    • 1.Rb2?
      • 1...d1Q
        • 2.Rh2#
      • 1...d1S
        • 2.Rh2#
      • 1...d1B
        • 2.Rh2#
      • 1...d1R
        • 2.Rh2#
      • 1...g3
        • 2.Qh3#
      • 1...Kh4!
    • 1.Rxd2?
      • threat
        • 2.Rh2#
      • 1...g3
        • 2.Qh3#
      • 1...Kh4!
    • 1.Qe6?
      • 1...d1Q
        • 2.Rh2#
      • 1...d1S
        • 2.Rh2#
      • 1...d1B
        • 2.Rh2#
      • 1...d1R
        • 2.Rh2#
      • 1...g3
        • 2.Qh3#
      • 1...Kh4!
    • 1.Qd7?
      • threat
        • 2.Qh7#
      • 1...g3
        • 2.Qh3#
      • 1...Kh4!
    • 1.Qc7?
      • threat
        • 2.Qh2#
        • 2.Qh7#
      • 1...Kh4
        • 2.Qh2#
      • 1...g3!
    • 1.Qb8?
      • threat
        • 2.Qh2#
      • 1...Kh4
        • 2.Qh2#
      • 1...g3!
  • Keys
    • 1.Sh6!
      • 1...Kh4
        • 2.Qxg4#
      • 1...Kxh6
        • 2.Qh8#
      • 1...d1Q
        • 2.Rh2#
      • 1...d1S
        • 2.Rh2#
      • 1...d1B
        • 2.Rh2#
      • 1...d1R
        • 2.Rh2#
      • 1...g3
        • 2.Qh3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(a);OGATE::R(A)
    • P(b);OGATE::QAR2(C)
  • Tries
    • Try
      • S(D);
      • Threat
        • QAR(C)
      • Vars
        • K(c);P-FLIGHT::QAR2(C)
        • P(b);OGATE::QAR2(C)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • R(A);
      • Vars
        • P(a);OGATE::R(A)
        • P(b);OGATE::QAR2(C)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • R(A);
      • Vars
        • P(a);OGATE::R(A)
        • P(b);OGATE::QAR2(C)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • R(A);XP(a)
      • Threat
        • R(A)
      • Vars
        • P(b);OGATE::QAR2(C)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • Q(C);
      • Vars
        • P(a);OGATE::R(A)
        • P(b);OGATE::QAR2(C)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • Q(C);
      • Threat
        • QAR2(C)
      • Vars
        • P(b);OGATE::QAR2(C)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • Q(C);
      • Threat
        • DUALS(2)
      • Vars
        • K(c);P-FLIGHT::QAR2(C)
      • Refutation
        • P(b);
    • Try
      • Q(C);
      • Threat
        • QAR(C)
      • Vars
        • K(c);P-FLIGHT::QAR2(C)
      • Refutation
        • P(b);
  • Actual
    • S(D);
    • Vars
      • K(c);P-FLIGHT::QAR1(C),XP(b)
      • K(c);OGATEB,P-FLIGHT,XS(D)::QAR2(C)
      • P(a);OGATE::R(A)
      • P(b);OGATE::QAR2(C)
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