MESON Chess Problem Database

Problem Display
PID: 108917 (4NnB1/Bp1p1Np1/2P2pP1/1rrkPK2/4pQ2/1PR1p3/3nP3/8 w - - 0 1)

Luptak, Juraj

Umenie 64, 1997

4NnB1/Bp1p1Np1/2P2pP1/1rrkPK2/4pQ2/1PR1p3/3nP3/8

#2

12 + 11

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kd4
      • 2.Rd3#
    • 1...Kxc6
      • 2.Sd8#
    • 1...Sb1
      • 2.Qxe4#
    • 1...Sf1
      • 2.Qxe4#
    • 1...Sxb3
      • 2.Qxe4#
    • 1...Sf3
      • 2.Qxe4#
    • 1...Sc4
      • 2.Qxe4#
  • Tries
    • 1.Sd8+?
      • 1...Kd4
        • 2.Rd3#
        • 2.Qxe3#
      • 1...Se6!
    • 1.Sc7+?
      • 1...Kd4
        • 2.Rd3#
        • 2.Qxe3#
      • 1...Kxc6!
    • 1.Rd3+?
      • 1...Kxc6
        • 2.Sd8#
        • 2.Rd6#
      • 1...exd3!
  • Keys
    • 1.exf6!
      • threat
        • 2.Qd6#
      • 1...Kd4+
        • 2.Qe5#
      • 1...Kxc6+
        • 2.Se5#
      • 1...Rxc6
        • 2.Qe5#
      • 1...Sc4
        • 2.Qxe4#
      • 1...d6
        • 2.Qxd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • K(f);P-FLIGHT,P_PINP(E),P_SPINP(c),P_SPINR(e)::R1(C)
    • K(f);P_PINP(E),P_SPINR(e),S_FLIGHT,XP(G)::S(J)
    • S(a);N_GUARD::QAB1(D),XP(c)
    • S(a);N_GUARD,XP(B)::QAB1(D),XP(c)
  • Tries
    • Try
      • S(J);CHECK
      • Refutation
        • S(k);P_SPINS(k)
    • Try
      • S(K);CHECK
      • Refutation
        • K(f);P_PINP(E),P_SPINR(e),S_FLIGHT,XP(G)
    • Try
      • R(C);CHECK
      • Refutation
        • P(c);XR(C)
  • Actual
    • P(E);XP(g)
    • Threat
      • QAR1(D)
    • Vars
      • K(f);CHECK,P-FLIGHT,P_SPINP(c),P_SPINR(e)::QAB1(D)
      • K(f);CHECK,P_SPINR(e),S_FLIGHT,XP(G)::S(J)
      • R(e);XP(G)::QAR1(D)
      • S(a);N_GUARD::QAB1(D),XP(c)
      • P(i);::QAR1(D),XP(i)
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