MESON Chess Problem Database

Problem Display
PID: 101458 (2R5/5p1b/8/2Nk1r2/3p1P2/3Q1P1B/2K5/8 w - - 0 1)

Stubbs, Arthur Goodwin

Good Companions, 1920

2R5/5p1b/8/2Nk1r2/3p1P2/3Q1P1B/2K5/8

#2

7 + 5

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Se4?
      • threat
        • 2.Qc4#
        • 2.Qb3#
      • 1...Rxf4
        • 2.Rc5#
        • 2.Qb5#
      • 1...Ke6!
    • 1.Sb7?
      • threat
        • 2.Qc4#
        • 2.Qe4#
        • 2.Qb3#
      • 1...Rxf4
        • 2.Rc5#
      • 1...Re5
        • 2.Rc5#
      • 1...Rg5
        • 2.Rc5#
      • 1...Rh5
        • 2.Rc5#
      • 1...Rf6
        • 2.Rc5#
      • 1...Ke6!
    • 1.Qe4+?
      • 1...Kd6
        • 2.Rc6#
      • 1...Kc4!
  • Keys
    • 1.Qb5!
      • threat
        • 2.Rd8#
      • 1...Rxf4+
        • 2.Se4#
      • 1...Re5+
        • 2.Se4#
      • 1...Rg5+
        • 2.Se4#
      • 1...Rh5+
        • 2.Se4#
      • 1...Rf6+
        • 2.Se4#
      • 1...d3+
        • 2.Qxd3#
      • 1...Kd6
        • 2.Qd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(F);
      • Threat
        • DUALS(2)
      • Refutation
        • K(b);N_SPINP(a),P_SPINR(c),S_FLIGHT
    • Try
      • S(F);
      • Threat
        • DUALS(3)
      • Vars
        • R(c);P_PINQ(B),XP(E)::R1(G)
        • R(c);P_PINQ(B)::R1(G)
      • Refutation
        • K(b);N_SPINP(a),P_SPINR(c),S_FLIGHT
    • Try
      • Q(B);CHECK,N_PINP(a)
      • Vars
        • K(b);P-FLIGHT::R1(G)
      • Refutation
        • K(b);P_SPINP(a),S_FLIGHT
  • Actual
    • Q(B);N_PINP(a)
    • Threat
      • R(G)
    • Vars
      • R(c);CHECK,XP(E)::QAR(B)+S(F)
      • R(c);CHECK::QAR(B)+S(F)
      • P(a);CHECK,OGATEB::QAR2(B),XP(a)
      • K(b);P-FLIGHT::QAR1(B)
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