MESON Chess Problem Database

Problem Display
PID: 17875 (6K1/3N4/4N1p1/kPR5/5Qr1/pP6/b1n5/8 w - - 0 1)

Mikan, Ilja

2nd Prize, Praca, 1951

6K1/3N4/4N1p1/kPR5/5Qr1/pP6/b1n5/8

#2

7 + 6

5505 Dobrodruzstvi 64 poli 1973

SOLUTION

  • SOUND
  • Sets
    • 1...Rg1
      • 2.Qa4#
    • 1...Rg2
      • 2.Qa4#
    • 1...Rg3
      • 2.Qa4#
    • 1...Rg5
      • 2.Qa4#
    • 1...Sb4
      • 2.Qc7#
    • 1...Sd4
      • 2.Qd2#
  • Tries
    • 1.Sd8?
      • threat
        • 2.Sc6#
        • 2.Sb7#
      • 1...Rxf4
        • 2.Sc6#
      • 1...Sd4
        • 2.Qd2#
      • 1...Sb4
        • 2.Sb7#
        • 2.Qc7#
      • 1...Bxb3+!
    • 1.Qc4?
      • threat
        • 2.b6#
      • 1...Rg5
        • 2.Qa4#
      • 1...Sd4
        • 2.Qc3#
        • 2.Qa4#
      • 1...Rxc4!
  • Keys
    • 1.Sd4!
      • threat
        • 2.Sc6#
      • 1...Bxb3+
        • 2.Sxb3#
      • 1...Kb4
        • 2.Qd2#
      • 1...Sxd4
        • 2.Qd2#
      • 1...Sb4
        • 2.Qc7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • R(d);N_GUARD::QAR1(B)
    • S(b);SBLOCK::QAB(B)
    • S(b);N_GUARD,S_CUTR(d)::QAB(B)
  • Tries
    • Try
      • S(E);P_SPINP(A)
      • Threat
        • DUALS(2)
      • Vars
        • R(d);XQ(B)::S(E)
        • S(b);N_GUARD,S_CUTR(d)::QAB(B)
      • Refutation
        • B(a);CHECK,XP(A)
    • Try
      • Q(B);
      • Threat
        • R(D)+P(C)
      • Vars
        • R(d);N_GUARD::QAR1(B)
      • Refutation
        • R(d);XQ(B)
  • Actual
    • S(E);P_SPINP(A)
    • Threat
      • S(E)
    • Vars
      • B(a);CHECK,XP(A)::S(E),XB(a)
      • K(e);S_FLIGHT::QAB(B)
      • S(b);N_GUARD,XS(E)::QAB(B)
      • S(b);SBLOCK::QAB(B)
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