MESON Chess Problem Database

Problem Display
PID: 219875 (1K1k2n1/p4p2/2B1pP1q/1p1Np3/r7/1Q1R4/1b6/8 w - - 0 1)

Kashcheev, Niktopolion Pavlovich

Land og Folk, 1970

(First published on Sun Mar 29 1970)

1K1k2n1/p4p2/2B1pP1q/1p1Np3/r7/1Q1R4/1b6/8

#2

6 + 10

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Ra1
      • 2.Sc3#
    • 1...Ra2
      • 2.Sc3#
    • 1...Ra3
      • 2.Sc3#
    • 1...Ra5
      • 2.Sc3#
    • 1...Ra6
      • 2.Sc3#
    • 1...Bc1
      • 2.Sb4#
    • 1...Ba3
      • 2.Sb4#
    • 1...Se7
      • 2.fxe7#
    • 1...b4
      • 2.Sc3#
    • 1...exd5
      • 2.Rxd5#
      • 2.Qxd5#
  • Tries
    • 1.Qb4?
      • threat
        • 2.Sc3#
        • 2.Qd6#
      • 1...Sxf6
        • 2.Qe7#
      • 1...exd5
        • 2.Rxd5#
        • 2.Qd6#
      • 1...Qd2
        • 2.Qd6#
        • 2.Qf8#
      • 1...Qe3
        • 2.Qd6#
        • 2.Qf8#
      • 1...Qf4
        • 2.Qd6#
        • 2.Qf8#
      • 1...Qf8
        • 2.Qxf8#
      • 1...Qh1
        • 2.Qd6#
        • 2.Qf8#
      • 1...Qh3
        • 2.Qd6#
        • 2.Qf8#
      • 1...Qh4
        • 2.Qd6#
        • 2.Qf8#
      • 1...Qg6
        • 2.Qd6#
        • 2.Qf8#
      • 1...Qh7
        • 2.Qd6#
        • 2.Qf8#
      • 1...Ba3
        • 2.Sc3#
        • 2.Se3#
        • 2.Sf4#
        • 2.Sb6#
        • 2.Sc7#
        • 2.Se7#
      • 1...Bc3
        • 2.Sxc3#
        • 2.Qd6#
      • 1...Bd4
        • 2.Qd6#
      • 1...Se7
        • 2.Qd6#
        • 2.Qxe7#
        • 2.fxe7#
      • 1...e4
        • 2.Qd6#
      • 1...Rxb4!
  • Keys
    • 1.Qa3!
      • threat
        • 2.Qd6#
      • 1...Rxa3
        • 2.Sc3#
      • 1...Bxa3
        • 2.Sb4#
      • 1...Sxf6
        • 2.Qe7#
      • 1...Qf8
        • 2.Qxf8#
      • 1...Rb4
        • 2.Qa5#
      • 1...b4
        • 2.Sc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 6
  • Sets
    • R(b);N_GUARD::R(B)+S(C)
    • B(a);N_GUARD::R(B)+S(C)
    • S(j);OGATE::P(E),XS(j)
    • P(c);S_CUTR(b)::R(B)+S(C)
  • Tries
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • S(j);N_GUARD,XP(E)::QAB1(A)
        • Q(f);N_GUARD::QAR2(A),XQ(f)
        • B(a);::QAR2(A)
        • P(d);::QAR2(A)
      • Refutation
        • R(b);XQ(A)
  • Actual
    • Q(A);
    • Threat
      • QAR2(A)
    • Vars
      • R(b);N_GUARD,XQ(A)::R(B)+S(C)
      • B(a);N_GUARD,XQ(A)::R(B)+S(C)
      • S(j);N_GUARD,XP(E)::QAB1(A)
      • Q(f);N_GUARD::QAR2(A),XQ(f)
      • R(b);OGATE::QAB(A)
      • P(c);S_CUTR(b)::R(B)+S(C)
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