MESON Chess Problem Database

Problem Display
PID: 218812 (8/3B4/3B4/8/1ppk4/8/4Q3/1K6 w - - 0 1)

Kashcheev, Niktopolion Pavlovich

Land og Folk, 1977

8/3B4/3B4/8/1ppk4/8/4Q3/1K6

#2

4 + 3

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kc3
      • 2.Qe3#
    • 1...Kd5
      • 2.Qe5#
  • Tries
    • 1.Kc2?
      • threat
        • 2.Qe5#
      • 1...Kd5
        • 2.Qe5#
      • 1...c3
        • 2.Qd3#
      • 1...b3+!
    • 1.Bb5?
      • 1...Kc3
        • 2.Qe3#
      • 1...Kd5
        • 2.Qe5#
      • 1...c3
        • 2.Qd3#
        • 2.Qe5#
      • 1...b3!
    • 1.Bf5?
      • threat
        • 2.Qd2#
        • 2.Qe5#
      • 1...Kc3
        • 2.Qb2#
        • 2.Qe3#
      • 1...c3
        • 2.Qd3#
        • 2.Qe4#
      • 1...Kd5!
    • 1.Qe3+?
      • 1...Kd5
        • 2.Qe5#
      • 1...Kxe3!
    • 1.Qe4+?
      • 1...Kc3
        • 2.Qe3#
      • 1...Kxe4!
  • Keys
    • 1.Bc6!
      • threat
        • 2.Qd2#
      • 1...Kc3
        • 2.Qe3#
      • 1...c3
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • K(c);S_FLIGHT::QAR2(B)
    • K(c);P-FLIGHT::QAR1(B)
  • Tries
    • Try
      • K(A);S_FLIGHT
      • Threat
        • QAB1(B)
      • Vars
        • K(c);P-FLIGHT::QAR1(B)
        • P(b);N_GUARD::QAR1(B)
      • Refutation
        • P(a);CHECK
    • Try
      • B(D);
      • Vars
        • K(c);S_FLIGHT::QAR2(B)
        • K(c);P-FLIGHT::QAR1(B)
      • Refutation
        • P(a);
    • Try
      • B(D);
      • Threat
        • DUALS(2)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(c);P-FLIGHT::QAR1(B)
      • Refutation
        • K(c);S_FLIGHT,XQ(B)
    • Try
      • Q(B);CHECK
      • Vars
        • K(c);S_FLIGHT::QAR2(B)
      • Refutation
        • K(c);P-FLIGHT,XQ(B)
  • Actual
    • B(D);
    • Threat
      • QAR2(B)
    • Vars
      • K(c);S_FLIGHT::QAR2(B)
      • P(b);SBLOCK::QAR1(B)
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