MESON Chess Problem Database

Problem Display
PID: 44118 (8/4Q3/3pRp1r/q2p3b/N2k4/8/1N1P4/4K3 w - - 0 1)

Hanshew, John K

Source?, 0000

8/4Q3/3pRp1r/q2p3b/N2k4/8/1N1P4/4K3

#2

6 + 7

4803 Chess Problems by John K Hanshew 1874

SOLUTION

  • SOUND
  • Sets
    • 1...Qc3
      • 2.dxc3#
    • 1...Qa7
      • 2.Qxa7#
    • 1...Rh7
      • 2.Qxf6#
    • 1...Rh8
      • 2.Qxf6#
    • 1...Bg6
      • 2.Qxf6#
  • Tries
    • 1.Rxd6?
      • threat
        • 2.Qe3#
      • 1...Qc3
        • 2.dxc3#
      • 1...Qxd2+!
    • 1.Rxf6?
      • threat
        • 2.Rf4#
        • 2.Qe3#
      • 1...Qxa4
        • 2.Qe3#
      • 1...Rxf6
        • 2.Qe3#
      • 1...Qc3
        • 2.Rf4#
        • 2.dxc3#
      • 1...Bf3
        • 2.Qe3#
      • 1...Bg6
        • 2.Qe3#
      • 1...Qxd2+!
  • Keys
    • 1.Re2!
      • threat
        • 2.Qe3#
      • 1...Qxd2+
        • 2.Rxd2#
      • 1...Qc3
        • 2.dxc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 4
  • Sets
    • Q(b);::P(C),XQ(b)
    • Q(b);N_GUARD,N_PINP(C)::QAB(F),XQ(b)
    • R(g);N_GUARD::QAB(F),XP(f)
    • B(d);S_CUTR(g)::QAB(F),XP(f)
  • Tries
    • Try
      • R(E);P_PINP(c),XP(e)
      • Threat
        • QAB1(F)
      • Vars
        • Q(b);::P(C),XQ(b)
      • Refutation
        • Q(b);CHECK,XP(C)
    • Try
      • R(E);XP(f)
      • Threat
        • DUALS(2)
      • Vars
        • Q(b);N_PINP(C),XS(D)::QAB1(F)
        • R(g);XR(E)::QAB1(F)
        • B(d);::QAB1(F)
      • Refutation
        • Q(b);CHECK,XP(C)
  • Actual
    • R(E);
    • Threat
      • QAB1(F)
    • Vars
      • Q(b);CHECK,OGATE,XP(C)::R(E),XQ(b)
      • Q(b);::P(C),XQ(b)
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Developed and maintained by Brian Stephenson.
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