MESON Chess Problem Database

Problem Display
PID: 136629 (1N2RB2/4N3/5pQ1/2r5/2pk1P2/4p3/4P1b1/2R3K1 w - - 0 1)

Garaj, Ivan

Ulanov, Lev

Slovensky Dennik, 1993

1N2RB2/4N3/5pQ1/2r5/2pk1P2/4p3/4P1b1/2R3K1

#2

9 + 6

6490 yacpdb 2010

SOLUTION

  • SOUND
  • Sets
    • 1...Rd5
      • 2.Sec6#
    • 1...Bd5
      • 2.Sf5#
    • 1...c3
      • 2.Qd3#
  • Tries
    • 1.Sf5+?
      • 1...Kd5
        • 2.Rd1#
        • 2.Qf7#
        • 2.Qxg2#
        • 2.Qg8#
      • 1...Rxf5!
    • 1.Rd8+?
      • 1...Rd5
        • 2.Sec6#
      • 1...Bd5!
    • 1.Qxf6+?
      • 1...Re5
        • 2.Qxe5#
      • 1...Ke4!
  • Keys
    • 1.Sd5!
      • threat
        • 2.Rd1#
      • 1...Kxd5
        • 2.Rd1#
      • 1...Rxd5
        • 2.Sc6#
      • 1...Bxd5
        • 2.Qxf6#
      • 1...c3
        • 2.Qd3#
      • 1...Be4
        • 2.Qxe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • R(e);N_GUARD,SBLOCK,S_CUTB(a)::S(F)
    • B(a);SBLOCK,S_CUTR(e)::S(F)
    • P(c);N_GUARD::QAR1(E)
  • Tries
    • Try
      • S(F);CHECK
      • Refutation
        • R(e);XS(F)
    • Try
      • R(H);CHECK
      • Vars
        • R(e);P_SPINR(e)::S(F)
      • Refutation
        • B(a);P_SPINB(a)
    • Try
      • Q(E);CHECK,XP(f)
      • Vars
        • R(e);N_GUARD,P_SPINR(e)::QAB1(E),XR(e)
      • Refutation
        • K(d);P-FLIGHT
  • Actual
    • S(F);
    • Threat
      • R(A)
    • Vars
      • K(d);P-FLIGHT,XS(F)::R(A)
      • R(e);N_GUARD,SBLOCK,XS(F)::S(G)
      • B(a);SBLOCK,XS(F)::QAB(E),XP(f)
      • P(c);N_GUARD::QAR1(E)
      • B(a);N_GUARD::QAR1(E),XB(a)
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