MESON Chess Problem Database

Problem Display
PID: 234626 (1B6/2p2K2/8/3k4/R7/5P2/8/2Q5 w - - 0 1)

Lincoln, Robert A

Kudesnik, 2004

1B6/2p2K2/8/3k4/R7/5P2/8/2Q5

#2

5 + 2

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Ke5
      • 2.Qc5#
    • 1...c6
      • 2.Qg5#
      • 2.Qc4#
  • Tries
    • 1.Kf6?
      • 1...Kd6
        • 2.Rd4#
      • 1...c6
        • 2.Qg5#
        • 2.Qc4#
      • 1...c5!
    • 1.Ke7?
      • 1...Ke5
        • 2.Qg5#
        • 2.Qc5#
      • 1...c6
        • 2.Qg5#
        • 2.Qc4#
      • 1...c5!
    • 1.Ba7?
      • threat
        • 2.Qc5#
      • 1...Ke5
        • 2.Qc5#
      • 1...c5
        • 2.Qxc5#
      • 1...Kd6!
    • 1.Rd4+?
      • 1...Ke5
        • 2.Qf4#
        • 2.Qc5#
      • 1...Kxd4!
    • 1.Ra5+?
      • 1...Kd6
        • 2.Qxc7#
      • 1...c5
        • 2.Qxc5#
      • 1...Kd4!
    • 1.Qh6?
      • 1...Ke5
        • 2.Qe6#
      • 1...c5
        • 2.Qd6#
        • 2.Qe6#
      • 1...c6
        • 2.Qg5#
        • 2.Qh5#
        • 2.Qd6#
      • 1...Kc5!
    • 1.Qc2?
      • 1...Ke5
        • 2.Qc5#
      • 1...c5
        • 2.Qe4#
      • 1...c6
        • 2.Qf5#
        • 2.Qc4#
      • 1...Kd6!
    • 1.Qc4+?
      • 1...Ke5
        • 2.Qe6#
        • 2.Qc5#
      • 1...Kd6!
    • 1.Qc6+?
      • 1...Ke5
        • 2.Qc5#
        • 2.Qe6#
      • 1...Kxc6!
  • Keys
    • 1.f4!
      • 1...Kd6
        • 2.Rd4#
      • 1...c5
        • 2.Qh1#
      • 1...c6
        • 2.Qc4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • K(a);P-FLIGHT,P_SPINP(b)::QAR2(A)
  • Tries
    • Try
      • K(D);P-FLIGHT
      • Vars
        • K(a);P-FLIGHT,P_SPINP(b)::R(C)
      • Refutation
        • P(b);
    • Try
      • K(D);P-FLIGHT
      • Refutation
        • P(b);
    • Try
      • B(E);
      • Threat
        • QAR1(A)
      • Vars
        • K(a);P-FLIGHT::QAR2(A)
        • P(b);::QAR1(A),XP(b)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • R(C);CHECK
      • Refutation
        • K(a);P-FLIGHT,XR(C)
    • Try
      • R(C);CHECK
      • Vars
        • K(a);P-FLIGHT,P_SPINP(b)::QAB1(A),XP(b)
        • P(b);P_SPINP(b)::QAR1(A),XP(b)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(a);P-FLIGHT,P_SPINP(b)::QAR1(A)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(a);P-FLIGHT,P_SPINP(b)::QAR2(A)
        • P(b);SBLOCK::QAB1(A)
      • Refutation
        • K(a);P-FLIGHT,P_SPINP(b)
    • Try
      • Q(A);CHECK
      • Refutation
        • K(a);P-FLIGHT,P_SPINP(b)
    • Try
      • Q(A);CHECK
      • Refutation
        • K(a);S_FLIGHT,XQ(A)
  • Actual
    • P(B);
    • Vars
      • K(a);P-FLIGHT,P_SPINP(b)::R(C)
      • P(b);SBLOCK::QAB(A)
      • P(b);::QAB1(A)
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