MESON Chess Problem Database

Problem Display
PID: 4553 (B7/3K4/5pp1/2NRpk1b/8/4P2P/4P3/6Q1 w - - 0 1)

Hawkins, Xenophon

Detroit Free Press, 1879

B7/3K4/5pp1/2NRpk1b/8/4P2P/4P3/6Q1

#2

8 + 5

3360 Simple Two-move Themes 1924

SOLUTION

  • SOUND
  • Sets
    • 1...Bg4
      • 2.Qxg4#
    • 1...g5
      • 2.Qb1#
  • Tries
    • 1.Rd1?
      • threat
        • 2.Be4#
      • 1...Bg4
        • 2.Qxg4#
      • 1...e4
        • 2.Rd5#
      • 1...Bf3!
    • 1.Rd2?
      • threat
        • 2.Be4#
      • 1...Bg4
        • 2.Qxg4#
      • 1...e4
        • 2.Rd5#
      • 1...Bf3!
    • 1.Rd3?
      • threat
        • 2.Be4#
      • 1...Bg4
        • 2.Qxg4#
      • 1...e4
        • 2.Rd5#
      • 1...Bf3!
    • 1.Rd6?
      • threat
        • 2.Be4#
      • 1...Bg4
        • 2.Qxg4#
      • 1...e4
        • 2.Rd5#
      • 1...Bf3!
    • 1.Qf2+?
      • 1...Kg5
        • 2.Qf4#
      • 1...Bf3!
    • 1.Qh2?
      • threat
        • 2.Qf4#
      • 1...Kg5
        • 2.Qf4#
      • 1...g5!
    • 1.Qf1+?
      • 1...Kg5
        • 2.Qf4#
      • 1...Bf3!
    • 1.Qg3?
      • threat
        • 2.Qf4#
        • 2.e4#
      • 1...Bg4
        • 2.Qf4#
        • 2.Qxg4#
      • 1...Bf3
        • 2.Qf4#
      • 1...g5!
  • Keys
    • 1.Sb7!
      • threat
        • 2.Sd6#
      • 1...Ke4
        • 2.Sd6#
      • 1...Bg4
        • 2.Qxg4#
      • 1...g5
        • 2.Qb1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • B(c);N_GUARD::QAB1(A),XB(c)
    • P(e);SBLOCK::QAB(A)
  • Tries
    • Try
      • R(F);N_PINP(a)
      • Threat
        • B(H)
      • Vars
        • B(c);N_GUARD::QAB1(A),XB(c)
        • P(a);OGATEB::R(F)
      • Refutation
        • B(c);
    • Try
      • R(F);N_PINP(a)
      • Threat
        • B(H)
      • Vars
        • B(c);N_GUARD::QAB1(A),XB(c)
        • P(a);OGATEB::R(F)
      • Refutation
        • B(c);
    • Try
      • R(F);N_PINP(a)
      • Threat
        • B(H)
      • Vars
        • B(c);N_GUARD::QAB1(A),XB(c)
        • P(a);OGATEB::R(F)
      • Refutation
        • B(c);
    • Try
      • R(F);N_PINP(a)
      • Threat
        • B(H)
      • Vars
        • B(c);N_GUARD::QAB1(A),XB(c)
        • P(a);OGATEB::R(F)
      • Refutation
        • B(c);
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);P-FLIGHT::QAB1(A)
      • Refutation
        • B(c);P_SPINB(c)
    • Try
      • Q(A);
      • Threat
        • QAR1(A)
      • Vars
        • K(b);P-FLIGHT::QAB1(A)
      • Refutation
        • P(e);
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);P-FLIGHT::QAB1(A)
      • Refutation
        • B(c);P_SPINB(c)
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • B(c);::QAR1(A)
      • Refutation
        • P(e);
  • Actual
    • S(E);
    • Threat
      • S(E)
    • Vars
      • K(b);N_SPINP(a),S_FLIGHT::S(E)
      • B(c);N_GUARD::QAB1(A),XB(c)
      • P(e);SBLOCK::QAB(A)
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