MESON Chess Problem Database

Problem Display
PID: 38187 (8/8/8/8/p2R4/1k6/b4B2/Q2K4 w - - 0 1)

Lincoln, Robert A

More Fun with Chess Miniatures, 2000

8/8/8/8/p2R4/1k6/b4B2/Q2K4

#2

4 + 3

SOLUTION

  • SOUND
  • Tries
    • 1.Kc1?
      • threat
        • 2.Qb2#
      • 1...Ka3
        • 2.Qb2#
      • 1...a3!
    • 1.Rxa4?
      • 1...Bb1
        • 2.Qa3#
      • 1...Kxa4!
    • 1.Rb4+?
      • 1...Ka3
        • 2.Qb2#
      • 1...Kxb4!
    • 1.Qb1+?
      • 1...Ka3
        • 2.Qb4#
      • 1...Kc3
        • 2.Qc2#
        • 2.Qb4#
      • 1...Bxb1!
    • 1.Qc1?
      • 1...a3
        • 2.Qc2#
      • 1...Bb1!
    • 1.Qxa2+?
      • 1...Kc3
        • 2.Qc2#
        • 2.Qa3#
      • 1...Kxa2!
  • Keys
    • 1.Be1!
      • threat
        • 2.Qc3#
      • 1...Ka3
        • 2.Rd3#
      • 1...Bb1
        • 2.Rb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(B);P-FLIGHT
      • Threat
        • QAR1(A)
      • Vars
        • K(b);P-FLIGHT,P_SPINB(a)::QAB1(A)
      • Refutation
        • P(c);
    • Try
      • R(D);XP(c)
      • Vars
        • B(a);OGATE::QAR1(A)
      • Refutation
        • K(b);P_SPINB(a),S_FLIGHT,XR(D)
    • Try
      • R(D);CHECK
      • Vars
        • K(b);P-FLIGHT,P_SPINB(a)::QAB1(A)
      • Refutation
        • K(b);P-FLIGHT,XR(D)
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);OGATE,P-FLIGHT::QAB1(A)
      • Refutation
        • B(a);XQ(A)
    • Try
      • Q(A);
      • Vars
        • P(c);SBLOCK::QAB1(A)
      • Refutation
        • B(a);
    • Try
      • Q(A);CHECK,XB(a)
      • Refutation
        • K(b);S_FLIGHT,XQ(A)
  • Actual
    • B(C);
    • Threat
      • QAR1(A)
    • Vars
      • K(b);P-FLIGHT,P_SPINB(a)::R(D)
      • B(a);::R1(D)
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