MESON Chess Problem Database

Problem Display
PID: 238585 (8/8/1b6/8/6R1/7r/2BQ4/2K2k2 w - - 0 1)

Lincoln, Robert A

Problemist Ukraini, 2017

8/8/1b6/8/6R1/7r/2BQ4/2K2k2

#2

4 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rh1
      • 2.Bd3#
    • 1...Rd3
      • 2.Bxd3#
    • 1...Rh4
      • 2.Bd3#
    • 1...Rh5
      • 2.Bd3#
    • 1...Rh6
      • 2.Bd3#
    • 1...Rh7
      • 2.Bd3#
    • 1...Rh8
      • 2.Bd3#
    • 1...Be3
      • 2.Bd3#
  • Tries
    • 1.Kd1?
      • threat
        • 2.Qe1#
        • 2.Qe2#
        • 2.Qg2#
      • 1...Rh2
        • 2.Qe1#
      • 1...Rd3
        • 2.Bxd3#
      • 1...Re3
        • 2.Qg2#
      • 1...Bf2
        • 2.Qe2#
      • 1...Ba5
        • 2.Qe2#
        • 2.Qg2#
      • 1...Rg3!
  • Keys
    • 1.Rg2!
      • threat
        • 2.Qe2#
      • 1...Bf2
        • 2.Qxf2#
      • 1...Re3
        • 2.Qf2#
      • 1...Be3
        • 2.Bd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 7
  • Sets
    • R(b);N_GUARD::B(B)
    • R(b);N_GUARD::B(B),XR(b)
    • B(c);P_PINQ(C),S_CUTR(b)::B(B)
  • Tries
    • Try
      • K(A);P-FLIGHT
      • Threat
        • DUALS(3)
      • Vars
        • R(b);::QAR1(C)
        • R(b);N_GUARD,P_PINQ(C)::B(B),XR(b)
        • R(b);::QAB1(C)
        • B(c);::QAB1(C)
      • Refutation
        • R(b);
  • Actual
    • R(D);
    • Threat
      • QAB1(C)
    • Vars
      • B(c);N_GUARD::QAR1(C),XB(c)
      • R(b);S_CUTB(c)::QAR1(C)
      • B(c);P_PINQ(C),S_CUTR(b)::B(B)
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