MESON Chess Problem Database

Problem Display
PID: 95048 (K1R4Q/p7/r3pp2/2Pknp2/2p3p1/2p5/2B1RB2/1N1rqN2 w - - 0 1)

Taraba, Jozef

Pravda, 2002

K1R4Q/p7/r3pp2/2Pknp2/2p3p1/2p5/2B1RB2/1N1rqN2

#2

9 + 12

14580 Chess Compositions (Taraba) 2009
6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qxf1
      • 2.Sxc3#
    • 1...Qxe2
      • 2.Sxc3#
    • 1...Rd2
      • 2.Sxc3#
    • 1...Rd4
      • 2.Se3#
    • 1...Sd3
      • 2.Qh1#
    • 1...Sc6
      • 2.Qh1#
    • 1...Sg6
      • 2.Qh1#
    • 1...Sd7
      • 2.Qh1#
    • 1...Sf7
      • 2.Qh1#
    • 1...f4
      • 2.Be4#
  • Tries
    • 1.Rd8+?
      • 1...Rd6
        • 2.Rxd6#
      • 1...Sd7
        • 2.Qh1#
      • 1...Kc6!
    • 1.Qd8+?
      • 1...Rd6
        • 2.Qxd6#
      • 1...Sd7!
  • Keys
    • 1.Qxf6!
      • threat
        • 2.Qxe5#
      • 1...Qxe2
        • 2.Sxc3#
      • 1...Sd3
        • 2.Qd4#
      • 1...Sf3
        • 2.Se3#
      • 1...Sc6
        • 2.Qxe6#
      • 1...Sg6
        • 2.Se3#
      • 1...Sd7
        • 2.Se3#
      • 1...Sf7
        • 2.Se3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 5
    • ADDED MATES = 1
    • REMOVED MATES = 4
  • Sets
    • Q(b);N_GUARD,XS(B)::S(A),XP(c)
    • Q(b);N_GUARD,XR(D)::S(A),XP(c)
    • R(a);S_CUTQ(b)::S(A),XP(c)
    • R(a);SBLOCK::S(B)
    • S(g);N_GUARD::QAB(I)
    • P(h);N_GUARD::B(C)
  • Tries
    • Try
      • R(H);CHECK
      • Vars
        • R(i);N_GUARD,P_SPINR(i)::R1(H),XR(i)
        • S(g);P_SPINS(g)::QAB(I)
      • Refutation
        • K(f);S_FLIGHT
    • Try
      • Q(I);CHECK
      • Vars
        • R(i);N_GUARD,P_SPINR(i)::QAR1(I),XR(i)
      • Refutation
        • S(g);P_SPINS(g)
  • Actual
    • Q(I);XP(k)
    • Threat
      • QAR1(I),XS(g)
    • Vars
      • Q(b);N_GUARD,XR(D)::S(A),XP(c)
      • S(g);OGATE::QAR1(I)
      • S(g);::S(B)
      • S(g);S_CUTR(i)::QAB1(I),XP(j)
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