MESON Chess Problem Database

Problem Display
PID: 93845 (1N6/p3B2K/2B5/k3N3/r3p3/8/4bb2/1Q6 w - - 0 1)

Mikan, Ilja

Sachove umeni (Ceskoslovensky sach), 1951

1N6/p3B2K/2B5/k3N3/r3p3/8/4bb2/1Q6

#2

6 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Ra1
      • 2.Qb4#
    • 1...Ra2
      • 2.Qb4#
    • 1...Ra3
      • 2.Qb4#
    • 1...Rb4
      • 2.Qxb4#
    • 1...Rc4
      • 2.Qb5#
    • 1...Bd1
      • 2.Qb5#
    • 1...Bf3
      • 2.Qb5#
    • 1...Bg4
      • 2.Qb5#
    • 1...Bb5
      • 2.Qxb5#
    • 1...Bh5
      • 2.Qb5#
    • 1...Be1
      • 2.Bd8#
    • 1...Bg3
      • 2.Bd8#
    • 1...e3
      • 2.Bd8#
  • Tries
    • 1.Sc4+?
      • 1...Rxc4
        • 2.Qb5#
      • 1...Bxc4!
    • 1.Be8?
      • threat
        • 2.Sec6#
      • 1...Rb4
        • 2.Qxb4#
      • 1...Bb5
        • 2.Qxb5#
      • 1...Ra1
        • 2.Qb4#
      • 1...Ra2
        • 2.Qb4#
      • 1...Ra3
        • 2.Qb4#
      • 1...Rc4
        • 2.Qb5#
      • 1...Rd4!
  • Keys
    • 1.Bd7!
      • threat
        • 2.Sec6#
      • 1...Rb4
        • 2.Qxb4#
      • 1...Bb5
        • 2.Qxb5#
      • 1...Rd4
        • 2.Bd8#
      • 1...Ra1
        • 2.Qb4#
      • 1...Ra2
        • 2.Qb4#
      • 1...Ra3
        • 2.Qb4#
      • 1...Rc4
        • 2.Qb5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 7
  • Sets
    • R(c);N_GUARD::QAB1(A)
    • R(c);N_GUARD::QAB1(A),XR(c)
    • R(c);S_CUTB(a)::QAR1(A)
    • B(a);N_GUARD::QAR1(A)
    • B(a);N_GUARD::QAR1(A),XB(a)
    • B(a);N_GUARD,SBLOCK::QAR1(A)
    • B(b);N_GUARD::B(D)
    • P(d);S_CUTB(b)::B(D)
  • Tries
    • Try
      • S(B);CHECK
      • Vars
        • R(c);XS(B)::QAR1(A)
      • Refutation
        • B(a);XS(B)
    • Try
      • B(C);
      • Threat
        • S(B)
      • Vars
        • R(c);N_GUARD::QAB1(A),XR(c)
        • B(a);N_GUARD::QAR1(A),XB(a)
        • R(c);N_GUARD::QAB1(A)
        • R(c);S_CUTB(a)::QAR1(A)
      • Refutation
        • R(c);
  • Actual
    • B(C);
    • Threat
      • S(B)
    • Vars
      • R(c);N_GUARD::QAB1(A),XR(c)
      • B(a);N_GUARD::QAR1(A),XB(a)
      • R(c);S_CUTB(b)::B(D)
      • R(c);N_GUARD::QAB1(A)
      • R(c);S_CUTB(a)::QAR1(A)
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