MESON Chess Problem Database

Problem Display
PID: 193360 (8/3Kp3/8/R1qk1r2/6Q1/8/2P5/8 w - - 0 1)

Dobbs, Gilbert S

1st Prize, Pittsburgh Gazette-Times TT, 1914

8/3Kp3/8/R1qk1r2/6Q1/8/2P5/8

#2

4 + 4

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Qb5+
      • 2.Rxb5#
    • 1...Re5
      • 2.c4#
    • 1...e5
      • 2.c4#
  • Tries
    • 1.Qxf5+?
      • 1...Kc4
        • 2.Qxc5#
      • 1...e5
        • 2.Qd3#
      • 1...Kd4!
  • Keys
    • 1.c3!
      • threat
        • 2.Qd4#
      • 1...Qb5+
        • 2.Rxb5#
      • 1...Ke5
        • 2.Qd4#
      • 1...Rf4
        • 2.Qe6#
      • 1...e5
        • 2.c4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • Q(a);CHECK,OGATEB::R(C),XQ(a)
    • R(c);SBLOCK::P(A)
    • P(d);SBLOCK::P(A)
  • Tries
    • Try
      • Q(B);CHECK,XR(c)
      • Vars
        • K(b);N_SPINQ(a),OGATE,S_FLIGHT::QAR1(B),XQ(a)
        • P(d);P_SPINP(d),SBLOCK::QAR2(B)
      • Refutation
        • K(b);N_SPINQ(a),P-FLIGHT
  • Actual
    • P(A);
    • Threat
      • QAR1(B)
    • Vars
      • Q(a);CHECK,OGATEB::R(C),XQ(a)
      • K(b);P-FLIGHT::QAB1(B)
      • R(c);OGATE::QAB1(B)
      • P(d);SBLOCK::P(A)
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