MESON Chess Problem Database

Problem Display
PID: 184759 (8/4N1K1/8/B3Pp2/3k1P2/3P2p1/1P1RQ3/2q5 w - - 0 1)

Kubbel, Leonid Ivanovich (AKA Kubbel, Karl Artur Leonid)

Narodni listy, 1908

8/4N1K1/8/B3Pp2/3k1P2/3P2p1/1P1RQ3/2q5

#2

9 + 4

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Kc5
      • 2.d4#
    • 1...Qxd2
      • 2.Bb6#
    • 1...Qa1
      • 2.Bb6#
    • 1...Qb1
      • 2.Bb6#
    • 1...Qd1
      • 2.Bb6#
    • 1...Qe1
      • 2.Bb6#
    • 1...Qf1
      • 2.Bb6#
    • 1...Qg1
      • 2.Bb6#
    • 1...Qh1
      • 2.Bb6#
    • 1...g2
      • 2.Qf2#
  • Tries
    • 1.Rc2?
      • threat
        • 2.Bb6#
      • 1...Qxb2
        • 2.Rc4#
      • 1...Qxc2!
    • 1.Qe4+?
      • 1...Kc5
        • 2.Qd5#
        • 2.Qb4#
      • 1...fxe4!
  • Keys
    • 1.Qf1!
      • 1...Ke3
        • 2.Sxf5#
      • 1...Kc5
        • 2.d4#
      • 1...Qxb2
        • 2.Qg1#
      • 1...Qxd2
        • 2.Bb6#
      • 1...Qxf1
        • 2.Bb6#
      • 1...Qa1
        • 2.Bb6#
      • 1...Qb1
        • 2.Bb6#
      • 1...Qd1
        • 2.Bb6#
      • 1...Qe1
        • 2.Bb6#
      • 1...Qc2
        • 2.Qg1#
      • 1...Qc3
        • 2.Qg1#
      • 1...Qc4
        • 2.Qg1#
      • 1...Qc5
        • 2.Qg1#
      • 1...Qc6
        • 2.Qg1#
      • 1...Qc7
        • 2.Qg1#
      • 1...Qc8
        • 2.Qg1#
      • 1...g2
        • 2.Qf2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 2
  • Sets
    • K(c);OGATE,S_FLIGHT::P(D)
    • Q(a);N_GUARD,XR(B)::B(F)
    • Q(a);N_GUARD::B(F)
    • P(b);N_GUARD::QAB(C)
  • Tries
    • Try
      • R(B);
      • Threat
        • B(F)
      • Vars
        • Q(a);N_GUARD,XP(A)::R1(B)
      • Refutation
        • Q(a);XR(B)
    • Try
      • Q(C);CHECK
      • Refutation
        • P(d);XQ(C)
  • Actual
    • Q(C);
    • Vars
      • K(c);S_FLIGHT::S(H),XP(d)
      • K(c);OGATE,S_FLIGHT::P(D)
      • Q(a);N_GUARD,XP(A)::QAB(C)
      • Q(a);N_GUARD,XR(B)::B(F)
      • Q(a);N_GUARD,XQ(C)::B(F)
      • Q(a);N_GUARD::B(F)
      • Q(a);N_GUARD::QAB(C)
      • Q(a);N_GUARD,SBLOCK::QAB(C)
      • Q(a);N_GUARD,P_PINS(H)::QAB(C)
      • P(b);N_GUARD::QAB(C)
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