MESON Chess Problem Database

Problem Display
PID: 240742 (qn1n1Br1/p1N5/3N1kpP/QR6/b3pP2/6K1/8/b7 w - - 0 1)

Petite, Efren

Thema Danicum, 1990

qn1n1Br1/p1N5/3N1kpP/QR6/b3pP2/6K1/8/b7

#2

8 + 10

279 Problemas 2014
15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Bc3
      • 2.Qxc3#
    • 1...Bd1
      • 2.Qxa1#
    • 1...Bc2
      • 2.Qxa1#
    • 1...Bb3
      • 2.Qxa1#
    • 1...Bxb5
      • 2.Qxa1#
    • 1...Se6
      • 2.Sce8#
    • 1...Sf7
      • 2.Sde8#
  • Keys
    • 1.Rb7!
      • threat
        • 2.Qg5#
      • 1...g5
        • 2.Qf5#
      • 1...Be5
        • 2.Qxe5#
      • 1...Bb5
        • 2.Qxa1#
      • 1...Se6
        • 2.Sd5#
      • 1...Sf7
        • 2.Sxe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • B(a);N_GUARD::QAB(C),XB(a)
    • B(b);OGATE::QAB(C),XB(a)
    • B(b);OGATE,XR(D)::QAB(C),XB(a)
    • S(i);SBLOCK::S(G)
    • S(i);SBLOCK::S(E)
  • Actual
    • R(D);
    • Threat
      • QAB1(C)
    • Vars
      • P(e);N_GUARD::QAR1(C)
      • B(a);N_GUARD,P_PINP(B)::QAB1(C),XB(a)
      • B(b);OGATE::QAB(C),XB(a)
      • S(i);SBLOCK::S(G)
      • S(i);SBLOCK::S(E),XP(c)
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Developed and maintained by Brian Stephenson.
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