MESON Chess Problem Database

Problem Display
PID: 249658 (1BK2R2/3P4/8/1PQRP1p1/1p2kpp1/2b5/1nrP1nb1/1BN2N2 w - - 0 1)

Kovacevic, Marjan

6th HM., Schach-Aktiv, 1994

1BK2R2/3P4/8/1PQRP1p1/1p2kpp1/2b5/1nrP1nb1/1BN2N2

#2

12 + 10

15601 Albrecht-Leiss-Degener Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kf3
      • 2.Qe3#
    • 1...Bxd2
      • 2.Sxd2#
    • 1...f3
      • 2.Sg3#
  • Tries
    • 1.Sg3+?
      • 1...Kf3
        • 2.Qe3#
      • 1...fxg3!
    • 1.Rd4+?
      • 1...Bxd4
        • 2.Qc6#
      • 1...Kf3!
    • 1.Rd6?
      • threat
        • 2.Qd5#
      • 1...Kf3
        • 2.Qe3#
      • 1...Bxd2
        • 2.Sxd2#
      • 1...Bxe5
        • 2.Qc6#
      • 1...Bd4!
    • 1.Qd4+?
      • 1...Kf3
        • 2.Qe3#
      • 1...Bxd4+!
  • Keys
    • 1.Qc6!
      • threat
        • 2.Rd3#
      • 1...Kf3
        • 2.Rd3#
      • 1...Bxd2
        • 2.Rxd2#
      • 1...Bxe5
        • 2.Rd6#
      • 1...Bd4
        • 2.Rc5#
      • 1...Sbd3
        • 2.Rxd3#
      • 1...Sfd3
        • 2.Rxd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • K(g);N_SPINR(b),P_SPINP(h),S_FLIGHT::QAR1(F)
    • B(e);P_PINQ(F),XP(D)::S(C),XB(e)
    • P(h);N_GUARD::S(C)
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • K(g);N_SPINR(b),P_SPINP(h),S_FLIGHT::QAR1(F)
      • Refutation
        • P(h);XS(C)
    • Try
      • R(G);CHECK
      • Vars
        • B(e);P_PINQ(F),SBLOCK,XR(G)::QAB(F)
      • Refutation
        • K(g);N_SPINR(b),P_SPINP(h),S_FLIGHT
    • Try
      • R(G);
      • Threat
        • QAB1(F)
      • Vars
        • K(g);N_SPINR(b),P_SPINP(h),S_FLIGHT::QAR1(F)
        • B(e);P_PINQ(F),XP(D)::S(C),XB(e)
        • B(e);P_PINQ(F),SBLOCK,XP(H)::QAB(F)
      • Refutation
        • B(e);P_PINQ(F)
    • Try
      • Q(F);CHECK
      • Vars
        • K(g);N_SPINR(b),P_SPINP(h),S_FLIGHT::QAR1(F)
      • Refutation
        • B(e);CHECK,XQ(F)
  • Actual
    • Q(F);
    • Threat
      • QAB(F)+R(G)
    • Vars
      • K(g);N_SPINR(b),P_SPINP(h),S_FLIGHT::QAB(F)+R(G),DCHECK
      • B(e);OGATE,P_PINQ(F),XP(D)::QAB(F)+R(G),XB(e)
      • B(e);P_PINQ(F),SBLOCK,XP(H)::QAB(F)+R(G)
      • B(e);P_PINQ(F),SBLOCK::QAB(F)+R(G)
      • S(a);N_SPINR(b)::QAB(F)+R(G),XS(a)
      • S(c);N_SPINR(b)::QAB(F)+R(G),XS(c)
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