MESON Chess Problem Database

Problem Display
PID: 152806 (3r4/p3p3/4P3/2pk1P2/Q7/KN1N2B1/2B5/1b4b1 w - - 0 1)

Bantysh, Nikolai Ivanovich

StrateGems, 2011

3r4/p3p3/4P3/2pk1P2/Q7/KN1N2B1/2B5/1b4b1

#2

8 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...c4
      • 2.Sb4#
  • Tries
    • 1.Sd2?
      • threat
        • 2.Qe4#
      • 1...c4
        • 2.Qxc4#
      • 1...Bd4!
    • 1.Sa5?
      • threat
        • 2.Qc4#
      • 1...Bd4
        • 2.Qc6#
      • 1...c4
        • 2.Qxc4#
      • 1...Ba2!
    • 1.Sbxc5?
      • threat
        • 2.Bb3#
        • 2.Qe4#
      • 1...Bxc2
        • 2.Qe4#
      • 1...Rb8
        • 2.Qe4#
      • 1...Ba2
        • 2.Qe4#
      • 1...Bd4
        • 2.Bb3#
      • 1...Bxc5+!
    • 1.Sf2?
      • threat
        • 2.Qe4#
      • 1...c4
        • 2.Qb5#
      • 1...Bxc2!
  • Keys
    • 1.Se5!
      • threat
        • 2.Qc6#
      • 1...Kd6
        • 2.Qc6#
      • 1...Rd6
        • 2.Qc4#
        • 2.Qe4#
      • 1...Rc8
        • 2.Qd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • P(c);N_GUARD,SBLOCK::S(D)
  • Tries
    • Try
      • S(C);
      • Threat
        • QAB1(F)
      • Vars
        • P(c);::QAB1(F),XP(c)
      • Refutation
        • B(b);
    • Try
      • S(C);
      • Threat
        • QAB1(F)
      • Vars
        • B(b);SBLOCK::QAB1(F)
        • P(c);::QAB1(F),XP(c)
      • Refutation
        • B(a);
    • Try
      • S(C);XP(c)
      • Threat
        • DUALS(2)
      • Vars
        • B(a);XB(A)::QAB1(F)
        • R(g);::QAB1(F)
        • B(a);::QAB1(F)
        • B(b);::B(A)
      • Refutation
        • B(b);CHECK,XS(C)
    • Try
      • S(D);
      • Threat
        • QAB1(F)
      • Vars
        • P(c);OGATEB::QAR2(F)
      • Refutation
        • B(a);XB(A)
  • Actual
    • S(D);
    • Threat
      • QAB1(F)
    • Vars
      • K(d);P-FLIGHT::QAR1(F)
      • R(g);N_GUARD::QAR2(F)
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