MESON Chess Problem Database

Problem Display
PID: 252866 (2N1B3/8/8/2P5/1kp5/8/2K5/Q7 w - - 0 1)

Zimmer, Eligiusz

Zadachi i Etyudi, 2005

2N1B3/8/8/2P5/1kp5/8/2K5/Q7

#2

5 + 2

SOLUTION

  • SOUND
  • Sets
    • 1...c3
      • 2.Qxc3#
  • Tries
    • 1.Sb6?
      • 1...c3
        • 2.Qxc3#
      • 1...Kxc5!
    • 1.Sd6?
      • 1...c3
        • 2.Qxc3#
      • 1...Kxc5!
    • 1.Sa7?
      • 1...c3
        • 2.Qxc3#
      • 1...Kxc5!
    • 1.Se7?
      • 1...c3
        • 2.Qxc3#
      • 1...Kxc5!
    • 1.Bc6?
      • 1...c3
        • 2.Qxc3#
      • 1...Kxc5!
    • 1.Bd7?
      • 1...c3
        • 2.Qxc3#
      • 1...Kxc5!
    • 1.Qb2+?
      • 1...Ka5
        • 2.Qa3#
        • 2.Qb5#
        • 2.Qb6#
      • 1...Kxc5!
    • 1.Qd4?
      • 1...Ka3
        • 2.Qb2#
      • 1...Ka5!
    • 1.Qe5?
      • 1...Ka3
        • 2.Qb2#
      • 1...c3
        • 2.Qxc3#
      • 1...Ka5!
    • 1.Qb1+?
      • 1...Ka3
        • 2.Qb2#
      • 1...Ka5
        • 2.Qb5#
        • 2.Qb6#
      • 1...Kxc5!
    • 1.Qe1+?
      • 1...Ka3
        • 2.Qa5#
      • 1...c3
        • 2.Qxc3#
      • 1...Kxc5!
    • 1.Qa6?
      • 1...Kxc5
        • 2.Qd6#
      • 1...c3!
  • Keys
    • 1.Qf6!
      • 1...Ka3
        • 2.Qb2#
      • 1...Ka5
        • 2.Qb6#
      • 1...Kxc5
        • 2.Qd6#
      • 1...c3
        • 2.Qxc3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • P(b);::QAB1(A),XP(b)
  • Tries
    • Try
      • S(D);
      • Vars
        • P(b);::QAB1(A),XP(b)
      • Refutation
        • K(a);S_FLIGHT,XP(C)
    • Try
      • S(D);
      • Vars
        • P(b);::QAB1(A),XP(b)
      • Refutation
        • K(a);S_FLIGHT,XP(C)
    • Try
      • S(D);
      • Vars
        • P(b);::QAB1(A),XP(b)
      • Refutation
        • K(a);S_FLIGHT,XP(C)
    • Try
      • S(D);
      • Vars
        • P(b);::QAB1(A),XP(b)
      • Refutation
        • K(a);S_FLIGHT,XP(C)
    • Try
      • B(E);
      • Vars
        • P(b);::QAB1(A),XP(b)
      • Refutation
        • K(a);S_FLIGHT,XP(C)
    • Try
      • B(E);
      • Vars
        • P(b);::QAB1(A),XP(b)
      • Refutation
        • K(a);S_FLIGHT,XP(C)
    • Try
      • Q(A);CHECK
      • Refutation
        • K(a);S_FLIGHT,XP(C)
    • Try
      • Q(A);P_PINP(b)
      • Vars
        • K(a);N_GUARD,N_SPINP(b),S_FLIGHT::QAB1(A)
      • Refutation
        • K(a);N_SPINP(b),S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(a);N_GUARD,S_FLIGHT::QAB1(A)
        • P(b);::QAB1(A),XP(b)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);N_GUARD,S_FLIGHT::QAB1(A)
      • Refutation
        • K(a);S_FLIGHT,XP(C)
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAR2(A)
        • P(b);P_SPINP(b)::QAB1(A),XP(b)
      • Refutation
        • K(a);S_FLIGHT,XP(C)
    • Try
      • Q(A);
      • Vars
        • K(a);OGATEB,S_FLIGHT,XP(C)::QAB1(A)
      • Refutation
        • P(b);
  • Actual
    • Q(A);
    • Vars
      • K(a);N_GUARD,S_FLIGHT::QAB1(A)
      • K(a);OGATEB,S_FLIGHT,XP(C)::QAB1(A)
      • P(b);::QAB1(A),XP(b)
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