MESON Chess Problem Database

Problem Display
PID: 168583 (8/2p5/8/5P2/4k1K1/2P5/7Q/2N5 w - - 0 1)

Kozhakin, Vladimir Vladimirovich

Best Problems, 1998

8/2p5/8/5P2/4k1K1/2P5/7Q/2N5

#2

5 + 2

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Ke3
      • 2.Qf4#
      • 2.Qe2#
  • Tries
    • 1.Qd6?
      • threat
        • 2.Qd4#
        • 2.Qe6#
      • 1...Ke3
        • 2.Qf4#
        • 2.Qd4#
      • 1...c5
        • 2.Qe6#
      • 1...cxd6!
    • 1.Qxc7?
      • 1...Ke3
        • 2.Qf4#
      • 1...Kd5!
    • 1.Qh1+?
      • 1...Ke3
        • 2.Qe1#
      • 1...Ke5!
    • 1.Qd2?
      • threat
        • 2.Qd4#
      • 1...Ke5
        • 2.Qd4#
      • 1...c5!
    • 1.Qg2+?
      • 1...Ke3
        • 2.Qe2#
      • 1...Ke5!
    • 1.Qh6?
      • threat
        • 2.Qe6#
      • 1...Ke5
        • 2.Qe6#
      • 1...Kd5!
    • 1.c4?
      • threat
        • 2.Qf4#
      • 1...Ke3
        • 2.Qf4#
      • 1...Kd4!
  • Keys
    • 1.Qa2!
      • threat
        • 2.Qe6#
      • 1...Ke3
        • 2.Qe2#
      • 1...Ke5
        • 2.Qe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(B);
      • Threat
        • DUALS(2)
      • Vars
        • P(b);::QAR2(B)
      • Refutation
        • P(b);XQ(B)
    • Try
      • Q(B);XP(b)
      • Vars
        • K(a);P-FLIGHT::QAB1(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR2(B)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(B);
      • Threat
        • QAR1(B)
      • Vars
        • K(a);P-FLIGHT::QAB1(B)
      • Refutation
        • P(b);
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR1(B)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(B);
      • Threat
        • QAR2(B)
      • Vars
        • K(a);P-FLIGHT::QAR1(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • P(C);
      • Threat
        • QAR1(B)
      • Vars
        • K(a);P-FLIGHT::QAB1(B)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • Q(B);
    • Threat
      • QAR2(B)
    • Vars
      • K(a);P-FLIGHT::QAR1(B)
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