MESON Chess Problem Database

Problem Display
PID: 177522 (2k4K/BRP5/8/brN5/Q2n2b1/8/8/8 w - - 0 1)

Nemcek, Milan

Pravda, 1990

2k4K/BRP5/8/brN5/Q2n2b1/8/8/8

#2

6 + 5

4901 Best Problems 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Rb1
      • 2.Qe8#
    • 1...Rb2
      • 2.Qe8#
    • 1...Rb3
      • 2.Qe8#
    • 1...Rb4
      • 2.Qe8#
    • 1...Rb6
      • 2.Qe8#
    • 1...Sc2
      • 2.Qxg4#
    • 1...Se2
      • 2.Qxg4#
    • 1...Sb3
      • 2.Qxg4#
    • 1...Sf3
      • 2.Qxg4#
    • 1...Sc6
      • 2.Qxg4#
  • Tries
    • 1.Rb8+?
      • 1...Rxb8
        • 2.cxb8Q#
      • 1...Kxc7!
  • Keys
    • 1.Bb6!
      • threat
        • 2.Rb8#
      • 1...Rxb6
        • 2.Qe8#
      • 1...Bxb6
        • 2.Qa8#
      • 1...Sc6
        • 2.Qxg4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 8
  • Sets
    • R(d);OGATE::QAR2(A)
    • S(a);OGATE::QAB(A),XB(b)
  • Tries
    • Try
      • R(D);CHECK
      • Vars
        • R(d);OGATE,XR(D)::PXR(d)=Q
      • Refutation
        • K(e);P-FLIGHT,XP(E)
  • Actual
    • B(C);
    • Threat
      • R1(D)
    • Vars
      • R(d);OGATE,XB(C)::QAR2(A)
      • B(c);OGATE,XB(C)::QAR2(A)
      • S(a);OGATE::QAB(A),XB(b)
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