MESON Chess Problem Database

Problem Display
PID: 121468 (4K3/8/2N5/8/1P2kp1P/8/8/3B1Q2 w - - 0 1)

Kosek, Wojtech

Narodni listy, 1900

4K3/8/2N5/8/1P2kp1P/8/8/3B1Q2

#2

6 + 2

6490 yacpdb 2009
5454 Near Snap 2011

SOLUTION

  • SOUND
  • Sets
    • 1...Ke3
      • 2.Qe2#
    • 1...f3
      • 2.Qxf3#
  • Tries
    • 1.Kd7?
      • 1...Ke3
        • 2.Qe2#
      • 1...Kd5
        • 2.Bf3#
        • 2.Qd3#
      • 1...f3
        • 2.Qxf3#
      • 1...Kf5!
    • 1.Kf7?
      • 1...Ke3
        • 2.Qe2#
      • 1...Kf5
        • 2.Qd3#
      • 1...f3
        • 2.Qxf3#
      • 1...Kd5!
    • 1.Bf3+?
      • 1...Ke3
        • 2.Qe2#
      • 1...Kf5!
    • 1.Bg4?
      • threat
        • 2.Qf3#
      • 1...Ke3
        • 2.Qe2#
      • 1...f3
        • 2.Qxf3#
      • 1...Kd5!
    • 1.Qh3?
      • 1...f3
        • 2.Qxf3#
      • 1...Kd5!
    • 1.Qc4+?
      • 1...Ke3
        • 2.Qe2#
        • 2.Qd4#
      • 1...Kf5!
    • 1.Qb5?
      • 1...Ke3
        • 2.Qe2#
      • 1...f3!
  • Keys
    • 1.Ke7!
      • 1...Ke3
        • 2.Qe2#
      • 1...Kd5
        • 2.Bf3#
      • 1...Kf5
        • 2.Qd3#
      • 1...f3
        • 2.Qxf3#

This anticipates 160177(1923), 139326(2010)

This is a version of 24206

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(a);P-FLIGHT::QAR1(B)
    • P(b);::QAB1(B),XP(b)
  • Tries
    • Try
      • K(F);S_FLIGHT
      • Vars
        • K(a);P-FLIGHT::QAR1(B)
        • P(b);::QAB1(B),XP(b)
      • Refutation
        • K(a);P_SPINP(b),S_FLIGHT
    • Try
      • K(F);S_FLIGHT
      • Vars
        • K(a);P-FLIGHT::QAR1(B)
        • K(a);P_SPINP(b),S_FLIGHT::QAB(B)
        • P(b);::QAB1(B),XP(b)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(A);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR1(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(A);
      • Threat
        • QAB1(B)
      • Vars
        • K(a);P-FLIGHT::QAR1(B)
        • P(b);::QAB1(B),XP(b)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(B);
      • Vars
        • P(b);::QAB1(B),XP(b)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(B);
      • Vars
        • K(a);P-FLIGHT::QAR1(B)
      • Refutation
        • P(b);
  • Actual
    • K(F);P-FLIGHT
    • Vars
      • K(a);P-FLIGHT::QAR1(B)
      • K(a);S_FLIGHT::B(A)
      • K(a);P_SPINP(b),S_FLIGHT::QAB(B)
      • P(b);::QAB1(B),XP(b)
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