MESON Chess Problem Database

Problem Display
PID: 61029 (2Nkq2R/p1pB4/8/1Q5b/Kn1p2p1/p7/8/2r5 w - - 0 1)

Roura, Juan R

2nd Prize, Good Companions (January), 1919

2Nkq2R/p1pB4/8/1Q5b/Kn1p2p1/p7/8/2r5

#2

5 + 10

3132 The Good Companion Two-Mover 1922
133 The Problemist Supplement 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Bxg4?
      • threat
        • 2.Qd7#
      • 1...Bxg4
        • 2.Rxe8#
        • 2.Qxe8#
      • 1...c6
        • 2.Qa5#
      • 1...Sc6
        • 2.Qd5#
      • 1...Rc6!
    • 1.Bf5?
      • threat
        • 2.Qd7#
      • 1...c6
        • 2.Qa5#
      • 1...Sc6
        • 2.Qd5#
      • 1...Rc6!
  • Keys
    • 1.Be6!
      • threat
        • 2.Qd7#
      • 1...c6
        • 2.Qa5#
      • 1...Rc6
        • 2.Qg5#
      • 1...Sc6
        • 2.Qd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(C);P_SPINQ(B),XP(e)
      • Threat
        • QAR1(B)
      • Vars
        • P(h);N_PINQ(B)::QAB(B)
        • S(c);N_PINQ(B)::QAR(B)
      • Refutation
        • R(a);N_PINQ(B)
    • Try
      • B(C);P_SPINQ(B)
      • Threat
        • QAR1(B)
      • Vars
        • P(h);N_PINQ(B)::QAB(B)
        • S(c);N_PINQ(B)::QAR(B)
      • Refutation
        • R(a);N_PINQ(B)
  • Actual
    • B(C);P_SPINQ(B)
    • Threat
      • QAR1(B)
    • Vars
      • P(h);N_PINQ(B)::QAB(B)
      • R(a);N_PINQ(B)::QAB(B)
      • S(c);N_PINQ(B)::QAR(B)
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