MESON Chess Problem Database

Problem Display
PID: 5035 (2K5/6p1/pQ4p1/5k1N/4p1r1/5N2/8/8 w - - 0 1)

Challenger, Alfred Clement

Morning Post, 1897

2K5/6p1/pQ4p1/5k1N/4p1r1/5N2/8/8

#2

4 + 6

3360 Simple Two-move Themes 1924
5501 Chess Cameos 1936
3713 Snap 2010

SOLUTION

  • SOUND
  • Tries
    • 1.Sd4+?
      • 1...Ke5
        • 2.Qc5#
      • 1...Kg5!
    • 1.Qc7?
      • threat
        • 2.Qe5#
        • 2.Qd7#
        • 2.Qf7#
      • 1...Ke6
        • 2.Qd7#
      • 1...gxh5
        • 2.Qf7#
      • 1...Rg1
        • 2.Qd7#
      • 1...Rg2
        • 2.Qd7#
      • 1...Rg3
        • 2.Qd7#
      • 1...Rf4
        • 2.Qd7#
      • 1...Rh4
        • 2.Qd7#
      • 1...Rg5
        • 2.Qd7#
      • 1...e3
        • 2.Qe5#
      • 1...g5
        • 2.Qf7#
      • 1...exf3!
    • 1.Qb5+?
      • 1...Ke6
        • 2.Qd7#
      • 1...axb5!
    • 1.Qd6?
      • threat
        • 2.Sxg7#
        • 2.Qe5#
        • 2.Qd5#
        • 2.Qd7#
      • 1...exf3
        • 2.Qd5#
      • 1...Rg1
        • 2.Qd7#
      • 1...Rg2
        • 2.Qd7#
      • 1...Rg3
        • 2.Qd7#
      • 1...Rf4
        • 2.Qd7#
      • 1...Rh4
        • 2.Qd7#
      • 1...Rg5
        • 2.Qd7#
      • 1...e3
        • 2.Qe5#
        • 2.Qd5#
      • 1...g5
        • 2.Sd4#
        • 2.Sxg7#
      • 1...gxh5!
  • Keys
    • 1.Qb7!
      • threat
        • 2.Qd5#
        • 2.Qd7#
        • 2.Qf7#
      • 1...Ke6
        • 2.Qd7#
      • 1...exf3
        • 2.Qd5#
      • 1...gxh5
        • 2.Qf7#
      • 1...Rg1
        • 2.Qd7#
      • 1...Rg2
        • 2.Qd7#
      • 1...Rg3
        • 2.Qd7#
      • 1...Rf4
        • 2.Qd7#
      • 1...Rh4
        • 2.Qd7#
      • 1...Rg5
        • 2.Qd7#
      • 1...g5
        • 2.Qf7#
      • 1...e3
        • 2.Qd5#

This anticipates 137592(1900)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 11
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(A);CHECK
      • Vars
        • K(c);P-FLIGHT::QAR2(C)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • Q(C);
      • Threat
        • DUALS(3)
      • Vars
        • K(c);S_FLIGHT::QAB1(C)
        • P(e);XS(B)::QAR2(C)
        • R(b);::QAB(C)
        • P(a);::QAR1(C)
        • P(e);::QAR2(C)
      • Refutation
        • P(a);XS(A)
    • Try
      • Q(C);CHECK
      • Vars
        • K(c);S_FLIGHT::QAB1(C)
      • Refutation
        • P(d);XQ(C)
    • Try
      • Q(C);
      • Threat
        • DUALS(4)
      • Vars
        • P(a);XS(A)::QAR2(C)
        • R(b);::QAB(C)
      • Refutation
        • P(e);XS(B)
  • Actual
    • Q(C);
    • Threat
      • DUALS(3)
    • Vars
      • K(c);S_FLIGHT::QAB1(C)
      • P(a);XS(A)::QAR2(C)
      • P(e);XS(B)::QAR2(C)
      • R(b);::QAB(C)
      • P(e);::QAR2(C)
      • P(a);::QAR2(C)
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