MESON Chess Problem Database

Problem Display
PID: 94840 (2bb1N2/1p1P4/4B2n/1K2k1r1/R2N4/B2p1PR1/1P1Q1rn1/5q2 w - - 0 1)

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

British Chess Magazine, 1936

2bb1N2/1p1P4/4B2n/1K2k1r1/R2N4/B2p1PR1/1P1Q1rn1/5q2

#2

11 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kf6+
      • 2.Qxg5#
    • 1...Bxd7+
      • 2.Sxd7#
  • Tries
    • 1.Sc6+?
      • 1...Kf6+
        • 2.Qxg5#
      • 1...bxc6+!
    • 1.Bd6+?
      • 1...Kf6+
        • 2.Qxg5#
      • 1...Kxd6+!
    • 1.Rxg5+?
      • 1...Kf6
        • 2.Sh7#
      • 1...Sf5
        • 2.Rxf5#
      • 1...Bxg5!
    • 1.Qe3+?
      • 1...Kf6+
        • 2.Qxg5#
      • 1...Sxe3!
    • 1.Qxg5+?
      • 1...Sf5
        • 2.Sg6#
        • 2.Qxf5#
      • 1...Bxg5!
  • Keys
    • 1.Qc3!
      • threat
        • 2.Sc2#
        • 2.Se2#
        • 2.Sb3#
        • 2.Sf5#
        • 2.Sc6#
      • 1...Kf4+
        • 2.Sf5#
      • 1...Kf6+
        • 2.Sf5#
      • 1...Rxb2+
        • 2.Sb3#
      • 1...Bxd7+
        • 2.Sc6#
      • 1...d2+
        • 2.Se2#
      • 1...Qe2
        • 2.Sc2#
        • 2.Sxe2#
        • 2.Sb3#
        • 2.Sf5#
        • 2.Sc6#
      • 1...Qc1
        • 2.Sc2#
        • 2.Sc6#
      • 1...Qe1
        • 2.Sc6#
      • 1...Rc2
        • 2.Sxc2#
        • 2.Sc6#
      • 1...Re2
        • 2.Sc2#
        • 2.Sxe2#
        • 2.Sb3#
        • 2.Sf5#
        • 2.Sc6#
      • 1...Rg4
        • 2.Sc6#
      • 1...Rf5
        • 2.Sc2#
        • 2.Se2#
        • 2.Sb3#
        • 2.Sxf5#
        • 2.Sc6#
      • 1...Ba5
        • 2.Sc6#
      • 1...Bb6
        • 2.Sc6#
      • 1...Sf5
        • 2.Sxf5#
        • 2.Sc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • K(e);CHECK,S_FLIGHT::QAB1(B),XR(f)
    • B(i);CHECK,XP(J)::S(K),XB(i)
  • Tries
    • Try
      • S(G);CHECK
      • Vars
        • K(e);CHECK,S_FLIGHT::QAB1(B),XR(f)
      • Refutation
        • P(h);CHECK,XS(G)
    • Try
      • B(C);CHECK
      • Vars
        • K(e);CHECK,S_FLIGHT::QAB1(B),XR(f)
      • Refutation
        • K(e);CHECK,S_FLIGHT,XB(C)
    • Try
      • R(E);CHECK,XR(f)
      • Vars
        • K(e);S_FLIGHT::S(K)
        • S(g);N_GUARD,P_SPINS(g)::R1(E),XS(g)
      • Refutation
        • B(j);XR(E)
    • Try
      • Q(B);CHECK
      • Vars
        • K(e);CHECK,S_FLIGHT::QAB1(B),XR(f)
      • Refutation
        • S(c);XQ(B)
    • Try
      • Q(B);CHECK,XR(f)
      • Refutation
        • B(j);XQ(B)
  • Actual
    • Q(B);
    • Threat
      • DUALS(5)
    • Vars
      • K(e);CHECK,S_FLIGHT::R(F)+S(G)
      • K(e);CHECK,S_FLIGHT::QAB(B)+S(G)
      • R(b);CHECK,XP(A)::QAB(B)+S(G)
      • B(i);CHECK,XP(J)::QAB(B)+S(G),DCHECK
      • P(d);CHECK::QAB(B)+S(G)
      • Q(a);::QAB(B)+S(G),DCHECK
      • R(f);::QAB(B)+S(G),DCHECK
      • B(j);::QAB(B)+S(G),DCHECK
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