MESON Chess Problem Database

Problem Display
PID: 169380 (8/3b3B/kBpN4/2Pp4/3PrR2/4RrpQ/8/2K5 w - - 0 1)

Bhushan, Phani

2nd Comm., SuperProblem 201. TT, 2018

8/3b3B/kBpN4/2Pp4/3PrR2/4RrpQ/8/2K5

#2

9 + 7

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Rf1+
      • 2.Qxf1#
    • 1...Rf2
      • 2.Ra3#
    • 1...Rfxf4
      • 2.Ra3#
    • 1...Rexf4
      • 2.Bd3#
    • 1...Re5
      • 2.Bd3#
    • 1...Re6
      • 2.Bd3#
    • 1...Re7
      • 2.Bd3#
    • 1...Re8
      • 2.Bd3#
    • 1...Bc8
      • 2.Qxc8#
    • 1...Be8
      • 2.Qc8#
  • Tries
    • 1.Qxd7?
      • threat
        • 2.Qc8#
        • 2.Qa7#
        • 2.Qb7#
      • 1...Re7
        • 2.Bd3#
      • 1...Re8
        • 2.Bd3#
        • 2.Qa7#
        • 2.Qb7#
      • 1...Rf1+!
  • Keys
    • 1.Rf8!
      • threat
        • 2.Ra8#
      • 1...Rf1+
        • 2.Qxf1#
      • 1...Rxf8
        • 2.Ra3#
      • 1...Re8
        • 2.Bd3#
      • 1...Bc8
        • 2.Qxc8#
      • 1...Be8
        • 2.Qc8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 6
  • Sets
    • R(a);CHECK,N_GUARD::QAB(C),XR(a)
    • R(a);N_GUARD::R(B)
    • R(a);N_GUARD,XR(E)::R(B)
    • R(c);OGATE,XR(E)::B(I)
    • R(c);OGATE::B(I)
    • B(g);OGATE::QAB(C),XB(g)
    • B(g);OGATE::QAB(C)
  • Tries
    • Try
      • Q(C);XB(g)
      • Threat
        • DUALS(3)
      • Vars
        • R(c);OGATE::B(I)
      • Refutation
        • R(a);CHECK
  • Actual
    • R(E);
    • Threat
      • R(E)
    • Vars
      • R(a);CHECK,N_GUARD::QAB(C),XR(a)
      • R(a);N_GUARD,XR(E)::R(B)
      • R(c);OGATE::B(I)
      • B(g);OGATE::QAB(C),XB(g)
      • B(g);OGATE::QAB(C)
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