MESON Chess Problem Database

Problem Display
PID: 233729 (8/8/8/2N3QB/3b4/4N3/K2kp2R/8 w - - 0 1)

Kuntze, Albrecht

Freie Presse, 1983

8/8/8/2N3QB/3b4/4N3/K2kp2R/8

#2

6 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kc1
      • 2.Sb3#
    • 1...Ke1
      • 2.Rxe2#
  • Tries
    • 1.Sf1+?
      • 1...Kd1
        • 2.Qd2#
      • 1...Ke1
        • 2.Qc1#
      • 1...Kc2
        • 2.Qd2#
      • 1...Kc3!
    • 1.Sc4+?
      • 1...Kd1
        • 2.Qd2#
      • 1...Ke1
        • 2.Qc1#
      • 1...Kc2
        • 2.Qd2#
      • 1...Kc3!
    • 1.Rxe2+?
      • 1...Kc1
        • 2.Sb3#
        • 2.Sd3#
        • 2.Rc2#
        • 2.Qg1#
      • 1...Kc3!
    • 1.Qd5?
      • 1...Kc1
        • 2.Sb3#
      • 1...Ke1
        • 2.Rxe2#
      • 1...Kxe3
        • 2.Qg5#
      • 1...Kc3!
  • Keys
    • 1.Qd8!
      • 1...Kc1
        • 2.Sb3#
      • 1...Ke1
        • 2.Rxe2#
      • 1...Kc3
        • 2.Qa5#
      • 1...Kxe3
        • 2.Qg5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(a);N_SPINP(b),S_FLIGHT::S(D)
    • K(a);N_SPINP(b),S_FLIGHT::R1(B),XP(b)
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR1(E)
        • K(a);N_SPINP(b),OGATE,S_FLIGHT::QAR2(E)
      • Refutation
        • K(a);N_SPINP(b),S_FLIGHT
    • Try
      • S(C);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR1(E)
        • K(a);N_SPINP(b),OGATE,S_FLIGHT::QAR2(E)
      • Refutation
        • K(a);N_SPINP(b),S_FLIGHT
    • Try
      • R(B);CHECK,XP(b)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(E);P_PINB(c)
      • Vars
        • K(a);N_SPINB(c),N_SPINP(b),S_FLIGHT::S(D)
        • K(a);N_SPINB(c),N_SPINP(b),S_FLIGHT::R1(B),XP(b)
        • K(a);N_SPINB(c),N_SPINP(b),OGATEB,S_FLIGHT,XS(C)::QAB(E)
      • Refutation
        • K(a);N_SPINB(c),N_SPINP(b),S_FLIGHT
  • Actual
    • Q(E);P_PINB(c)
    • Vars
      • K(a);N_SPINB(c),N_SPINP(b),S_FLIGHT::S(D)
      • K(a);N_SPINB(c),N_SPINP(b),S_FLIGHT::R1(B),XP(b)
      • K(a);N_SPINB(c),N_SPINP(b),S_FLIGHT::QAB(E)
      • K(a);N_SPINB(c),N_SPINP(b),OGATEB,S_FLIGHT,XS(C)::QAB(E)
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