MESON Chess Problem Database

Problem Display
PID: 232895 (2R5/8/5K2/8/2pk4/4p1N1/8/7Q w - - 0 1)

Dikusarov, Andrey Nikolayovich

Kudesnik, 2005

2R5/8/5K2/8/2pk4/4p1N1/8/7Q

#2

4 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...c3
      • 2.Qe4#
      • 2.Qd1#
  • Tries
    • 1.Rxc4+?
      • 1...Kd3
        • 2.Qd5#
      • 1...Kxc4!
    • 1.Qa1+?
      • 1...Kd5
        • 2.Qe5#
        • 2.Qd1#
      • 1...c3
        • 2.Qd1#
      • 1...Kd3!
    • 1.Qe1?
      • 1...Kd5
        • 2.Qd1#
      • 1...e2
        • 2.Qd2#
      • 1...c3
        • 2.Qd1#
      • 1...Kd3!
  • Keys
    • 1.Qc1!
      • threat
        • 2.Qxc4#
      • 1...Kd3
        • 2.Rd8#
      • 1...Kd5
        • 2.Qd1#
      • 1...e2
        • 2.Qd2#
      • 1...c3
        • 2.Qd1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(D);CHECK,XP(b)
      • Vars
        • K(c);P-FLIGHT::QAR2(A)
      • Refutation
        • K(c);P-FLIGHT,XR(D)
    • Try
      • Q(A);CHECK
      • Vars
        • P(b);P_SPINP(b)::QAR(A)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(c);P-FLIGHT::QAR(A)
        • P(a);N_GUARD::QAR2(A)
        • P(b);::QAR(A)
      • Refutation
        • K(c);P-FLIGHT
  • Actual
    • Q(A);
    • Threat
      • QAR1(A),XP(b)
    • Vars
      • K(c);P-FLIGHT::R(D)
      • K(c);P-FLIGHT::QAR(A)
      • P(a);N_GUARD::QAR2(A)
      • P(b);::QAR(A)
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