MESON Chess Problem Database

Problem Display
PID: 142417 (8/1rp1B3/1b1P3R/1pk5/2p5/2Q5/BK2N3/6n1 w - - 0 1)

Tucker, Frederick G

British Chess Magazine, 1891

8/1rp1B3/1b1P3R/1pk5/2p5/2Q5/BK2N3/6n1

#2

7 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...b4
      • 2.Qxc4#
    • 1...c6
      • 2.Rh5#
  • Tries
    • 1.Qd2?
      • threat
        • 2.dxc7#
        • 2.d7#
      • 1...c3+
        • 2.Qxc3#
      • 1...Kc6
        • 2.d7#
      • 1...cxd6
        • 2.Qxd6#
      • 1...c6
        • 2.Rh5#
        • 2.d7#
      • 1...b4!
    • 1.Qd4+?
      • 1...Kc6
        • 2.d7#
      • 1...Kb4!
  • Keys
    • 1.Qd3!
      • threat
        • 2.dxc7#
        • 2.d7#
      • 1...c3+
        • 2.Qxc3#
      • 1...Kb4
        • 2.Qa3#
      • 1...Kc6
        • 2.d7#
      • 1...cxd6
        • 2.Qxd6#
      • 1...b4
        • 2.Qxc4#
      • 1...c6
        • 2.d7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • P(c);N_GUARD::QAR1(D),XP(b)
    • P(g);SBLOCK::R(F)
  • Tries
    • Try
      • Q(D);N_PINP(b)
      • Threat
        • DUALS(2)
      • Vars
        • P(b);CHECK,OGATEB::QAR2(D),XP(b)
        • K(d);P-FLIGHT::R(F)+P(E)
        • P(g);OGATE,P_SPINP(g),XP(E)::QAB1(D),XP(g)
      • Refutation
        • P(c);
    • Try
      • Q(D);CHECK,N_PINP(b)
      • Vars
        • K(d);P-FLIGHT::R(F)+P(E)
      • Refutation
        • K(d);P_SPINP(b),S_FLIGHT
  • Actual
    • Q(D);N_PINP(b)
    • Threat
      • DUALS(2)
    • Vars
      • P(b);CHECK,OGATEB::QAR2(D),XP(b)
      • K(d);S_FLIGHT::QAB1(D)
      • K(d);P-FLIGHT::R(F)+P(E)
      • P(g);OGATE,P_SPINP(g),XP(E)::QAB1(D),XP(g)
      • P(c);N_GUARD::QAR1(D),XP(b)
      • P(g);::B(G)+P(E)
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