MESON Chess Problem Database

Problem Display
PID: 263270 (6B1/1KQ5/2p1N3/3k4/1p1p1P2/1p1p1pP1/2r1r3/4R3 w - - 0 1)

Janevski, Zivko

Szachy, 1988

6B1/1KQ5/2p1N3/3k4/1p1p1P2/1p1p1pP1/2r1r3/4R3

#2

7 + 9

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Kc4
      • 2.Qxc6#
    • 1...Ke4
      • 2.Qe5#
    • 1...Ra2
      • 2.Qxc6#
    • 1...Rb2
      • 2.Qxc6#
    • 1...Rcd2
      • 2.Qxc6#
  • Tries
    • 1.Sc5+?
      • 1...Kxc5
        • 2.Qxc6#
      • 1...Re6!
    • 1.Sg5+?
      • 1...Kc5
        • 2.Qxc6#
      • 1...Re6!
    • 1.Sg7+?
      • 1...Ke4
        • 2.Qe5#
        • 2.Qe7#
      • 1...Kc5
        • 2.Qxc6#
      • 1...Re6!
    • 1.Sd8+?
      • 1...Ke4
        • 2.Qe5#
      • 1...Kc5
        • 2.Qxc6#
      • 1...Re6!
    • 1.Sf8+?
      • 1...Ke4
        • 2.Qe5#
      • 1...Kc5
        • 2.Qxc6#
      • 1...Re6!
    • 1.Qe5+?
      • 1...Kc4
        • 2.Qc5#
      • 1...Rxe5!
    • 1.Qd6+?
      • 1...Kc4
        • 2.Qc5#
        • 2.Qxc6#
      • 1...Ke4
        • 2.Qe5#
      • 1...Kxd6!
    • 1.Qd7+?
      • 1...Kc4
        • 2.Qxc6#
      • 1...Ke4!
  • Keys
    • 1.Qe7!
      • threat
        • 2.Sc7#
      • 1...Kc4
        • 2.Qc5#
      • 1...Ke4
        • 2.Sg7#
      • 1...Rxe6
        • 2.Bxe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 3
  • Sets
    • K(h);P_SPINP(i),S_CUTR(a),S_FLIGHT::QAR2(F),XP(i)
    • K(h);N_GUARD,P_SPINR(b),S_FLIGHT::QAR1(F)
    • R(a);N_GUARD::QAB1(F),XP(i)
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • K(h);P-FLIGHT,P_SPINP(i),XS(D)::QAR1(F),XP(i)
      • Refutation
        • R(b);P_SPINR(b)
    • Try
      • S(D);CHECK
      • Vars
        • K(h);P-FLIGHT,P_SPINP(i)::QAR1(F),XP(i)
      • Refutation
        • R(b);P_SPINR(b)
    • Try
      • S(D);CHECK
      • Vars
        • K(h);P-FLIGHT,P_SPINP(i)::QAR1(F),XP(i)
      • Refutation
        • R(b);P_SPINR(b)
    • Try
      • S(D);CHECK
      • Vars
        • K(h);P_SPINR(b),S_FLIGHT::QAR1(F)
        • K(h);P-FLIGHT,P_SPINP(i)::QAR1(F),XP(i)
      • Refutation
        • R(b);P_SPINR(b)
    • Try
      • S(D);CHECK
      • Vars
        • K(h);P_SPINR(b),S_FLIGHT::QAR1(F)
        • K(h);P-FLIGHT,P_SPINP(i)::QAR1(F),XP(i)
      • Refutation
        • R(b);P_SPINR(b)
    • Try
      • Q(F);CHECK
      • Vars
        • K(h);OGATE,S_FLIGHT::QAR1(F)
      • Refutation
        • R(b);XQ(F)
    • Try
      • Q(F);CHECK
      • Vars
        • K(h);N_GUARD,P_SPINR(b),S_FLIGHT::QAR1(F)
      • Refutation
        • K(h);P-FLIGHT,XQ(F)
    • Try
      • Q(F);CHECK
      • Vars
        • K(h);S_CUTR(a),S_FLIGHT::QAR2(F),XP(i)
      • Refutation
        • K(h);P_SPINR(b),S_FLIGHT
  • Actual
    • Q(F);
    • Threat
      • B(G)+S(D),DCHECK
    • Vars
      • K(h);N_GUARD,S_CUTR(a),S_FLIGHT::QAR1(F)
      • K(h);P_SPINR(b),S_FLIGHT::QAR(F)+S(D)
      • R(b);OGATE,P_SPINR(b),XS(D)::B(G),XR(b)
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