MESON Chess Problem Database

Problem Display
PID: 69438 (1QRBbb2/p7/Pqn1Pp2/p1k5/3NP3/1P1P4/2N1B1p1/2R3K1 w - - 0 1)

Kamstra, Steffen

Tijdschrift vd NSB, 1898

1QRBbb2/p7/Pqn1Pp2/p1k5/3NP3/1P1P4/2N1B1p1/2R3K1

#2

13 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Qxb3
      • 2.Sxb3#
    • 1...Bh6
      • 2.Be7#
    • 1...Be7
      • 2.Bxe7#
    • 1...Bg7
      • 2.Be7#
    • 1...f5
      • 2.Qe5#
  • Tries
    • 1.Se3+?
      • 1...Kxd4
        • 2.Sf5#
      • 1...Kb4!
  • Keys
    • 1.Sf5!
      • threat
        • 2.d4#
      • 1...Kb5+
        • 2.d4#
      • 1...Qxd8
        • 2.Sa1#
        • 2.Se1#
        • 2.Sa3#
        • 2.Sce3#
        • 2.Sb4#
        • 2.Scd4#
      • 1...Qc7
        • 2.Sa1#
        • 2.Se1#
        • 2.Sa3#
        • 2.Sce3#
        • 2.Sb4#
        • 2.Scd4#
      • 1...Qb4
        • 2.Sxb4#

There are these versions: 92652

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 5
  • Sets
    • Q(d);XP(E)::S(G),XQ(d)
    • B(i);N_GUARD::B(M)
    • B(i);N_GUARD::B(M),XB(i)
    • P(f);N_GUARD::QAR2(K)
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • K(c);N_SPINS(e),S_FLIGHT,XS(G)::S(C)
      • Refutation
        • K(c);N_SPINS(e),P_SPINQ(d),S_FLIGHT
  • Actual
    • S(G);
    • Threat
      • P(F)
    • Vars
      • K(c);CHECK,N_SPINS(e),P-FLIGHT,P_SPINQ(d)::B(D)+P(F)
      • Q(d);::R(A)+S(C),XQ(d)
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Developed and maintained by Brian Stephenson.
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