MESON Chess Problem Database

Problem Display
PID: 80250 (BB6/5Q1K/2rP3p/4k1N1/R2r2pR/2P2p1q/2n5/6b1 w - - 0 1)

Hanacik, Kurt

5th Comm., Pat TT, 1938

BB6/5Q1K/2rP3p/4k1N1/R2r2pR/2P2p1q/2n5/6b1

#2

9 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Rd1
      • 2.Re4#
      • 2.Qe6#
    • 1...Rd2
      • 2.Re4#
      • 2.Qe6#
    • 1...Rd3
      • 2.Re4#
      • 2.Qe6#
    • 1...Re4
      • 2.Rxe4#
    • 1...Rf4
      • 2.Qe6#
    • 1...Rd5
      • 2.Re4#
      • 2.Qe6#
      • 2.Qf4#
    • 1...Rdxd6
      • 2.Re4#
      • 2.Qe6#
    • 1...Se3
      • 2.cxd4#
    • 1...g3
      • 2.Sxf3#
  • Tries
    • 1.Ra5+?
      • 1...Rd5
        • 2.Rxd5#
      • 1...Rc5!
    • 1.Ra7?
      • threat
        • 2.Re7#
      • 1...g3
        • 2.Sxf3#
      • 1...Rc7!
    • 1.Qf6+?
      • 1...Kd5
        • 2.Qf5#
      • 1...Kxf6!
  • Keys
    • 1.Kg6!
      • threat
        • 2.Qf5#
      • 1...Rdxd6+
        • 2.Qe6#
      • 1...Rcxd6+
        • 2.Qf6#
      • 1...Rc7
        • 2.Qf6#
      • 1...Rf4
        • 2.Qe6#
      • 1...Se3
        • 2.cxd4#
      • 1...g3
        • 2.Sxf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • R(e);OGATE::R1(B),XR(e)
    • R(e);::QAR1(F)
    • S(b);N_GUARD,S_CUTB(a)::P(A),XR(e)
    • P(f);N_GUARD,S_CUTQ(d)::S(D),XP(c)
  • Tries
    • Try
      • R(B);CHECK
      • Vars
        • R(e);N_GUARD,P_SPINR(e)::R1(B),XR(e)
      • Refutation
        • R(h);P_SPINR(h)
    • Try
      • R(B);
      • Threat
        • R(B)
      • Vars
        • P(f);N_GUARD,S_CUTQ(d)::S(D),XP(c)
      • Refutation
        • R(h);P_PINQ(F)
    • Try
      • Q(F);CHECK
      • Vars
        • K(g);P-FLIGHT,P_SPINR(h)::QAR2(F)
      • Refutation
        • K(g);S_FLIGHT,XQ(F)
  • Actual
    • K(G);P_SPINP(E),S_FLIGHT
    • Threat
      • QAR1(F)
    • Vars
      • R(e);CHECK,P_SPINR(e),XP(E)::QAR1(F)
      • R(h);CHECK,P_SPINR(h),XP(E)::QAB1(F)
      • R(h);N_PINP(E)::QAB1(F)
      • R(e);::QAR1(F)
      • S(b);N_GUARD,S_CUTB(a)::P(A),XR(e)
      • P(f);N_GUARD,S_CUTQ(d)::S(D),XP(c)
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