MESON Chess Problem Database

Problem Display
PID: 41896 (2B5/4bp2/b4Rp1/2p1k2n/2P1p2P/2K5/5Q2/n7 w - - 0 1)

Maximov, Nikolai J

Shakhmatny Zhurnal, 1896

2B5/4bp2/b4Rp1/2p1k2n/2P1p2P/2K5/5Q2/n7

#2

6 + 9

3360 Simple Two-move Themes 1924
5454 Near Snap 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Sg3
      • 2.Qf4#
    • 1...Sf4
      • 2.Qxf4#
    • 1...Sxf6
      • 2.Qg3#
      • 2.Qh2#
    • 1...Sg7
      • 2.Qf4#
    • 1...g5
      • 2.Qf5#
  • Tries
    • 1.Rf5+?
      • 1...Kd6
        • 2.Qxc5#
      • 1...gxf5!
    • 1.Qxc5+?
      • 1...Kxf6
        • 2.Qd4#
      • 1...Bxc5!
  • Keys
    • 1.Qb2!
      • threat
        • 2.Kd2#
      • 1...Kxf6
        • 2.Kd2#
      • 1...Bxc4
        • 2.Kxc4#
      • 1...Bxf6
        • 2.Qb8#
      • 1...Sxf6
        • 2.Qh2#
      • 1...e3
        • 2.Kd3#
      • 1...Sc2
        • 2.Kxc2#
      • 1...Sb3
        • 2.Kxb3#

This anticipates 189460(1911)

There are these versions: 121335

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 4
  • Sets
    • S(e);N_GUARD::QAB1(A)
    • S(e);N_GUARD::QAB1(A),XS(e)
    • P(g);N_GUARD::QAR1(A)
  • Tries
    • Try
      • R(E);CHECK
      • Vars
        • K(d);S_FLIGHT::QAB1(A),XP(c)
      • Refutation
        • P(g);XR(E)
    • Try
      • Q(A);CHECK,XP(c)
      • Vars
        • K(d);S_FLIGHT,XR(E)::QAB(A)
      • Refutation
        • B(h);XQ(A)
  • Actual
    • Q(A);
    • Threat
      • QAB(A)+K(B)
    • Vars
      • K(d);S_FLIGHT,XR(E)::QAB(A)+K(B)
      • B(f);XP(C)::QAB(A)+K(B),XB(f)
      • B(h);N_GUARD,SBLOCK,XR(E)::QAB(A)
      • S(e);N_GUARD,SBLOCK,XR(E)::QAB(A)
      • P(b);::QAB(A)+K(B)
      • S(a);::QAB(A)+K(B),XS(a)
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