MESON Chess Problem Database

Problem Display
PID: 169297 (3R4/4B3/Kp6/8/2k5/4R2r/2q2r2/2Q5 w - - 0 1)

Murashev, Pavel Aleksandrovich

4th Prize, SuperProblem 186. TT, 2017

3R4/4B3/Kp6/8/2k5/4R2r/2q2r2/2Q5

#2

5 + 5

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Qc3
      • 2.Qxc3#
    • 1...Rf1
      • 2.Qxc2#
    • 1...Rff3
      • 2.Qxc2#
    • 1...Rf4
      • 2.Qxc2#
    • 1...Rf5
      • 2.Qxc2#
    • 1...Rf6
      • 2.Qxc2#
    • 1...Rf7
      • 2.Qxc2#
    • 1...Rf8
      • 2.Qxc2#
  • Tries
    • 1.Re4+?
      • 1...Kb3
        • 2.Qa3#
      • 1...Kc3!
  • Keys
    • 1.Qa3!
      • threat
        • 2.Qb4#
      • 1...Qa4+
        • 2.Qxa4#
      • 1...Qb1
        • 2.Qc3#
      • 1...Qb3
        • 2.Qxb3#
      • 1...Qa2
        • 2.Re4#
      • 1...Qb2
        • 2.Qd3#
      • 1...Qd2
        • 2.Qb3#
      • 1...Qc3
        • 2.Qxc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 7
  • Sets
    • Q(a);OGATE::QAR1(A),XQ(a)
    • R(b);N_GUARD::QAR2(A),XQ(a)
  • Tries
    • Try
      • R(B);CHECK
      • Vars
        • K(d);N_SPINQ(a),S_FLIGHT::QAR1(A)
      • Refutation
        • K(d);P-FLIGHT
  • Actual
    • Q(A);N_PINQ(a)
    • Threat
      • QAR1(A)
    • Vars
      • Q(a);CHECK,N_GUARD::QAR2(A),XQ(a)
      • Q(a);N_GUARD::QAR1(A)
      • Q(a);N_GUARD::QAB1(A),XQ(a)
      • Q(a);N_GUARD,P_PINQ(A)::R(B)
      • Q(a);N_GUARD::QAB1(A)
      • Q(a);N_GUARD::QAR1(A),XQ(a)
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