MESON Chess Problem Database

Problem Display
PID: 241485 (n6b/2pRKQ2/1r1pNp2/2Bp1pP1/3pkP2/5R2/1n1PP3/8 w - - 0 1)

Hjelle, David

Revista Romana de Sah, 1968

n6b/2pRKQ2/1r1pNp2/2Bp1pP1/3pkP2/5R2/1n1PP3/8

#2

10 + 11

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Sd1
      • 2.d3#
    • 1...Sa4
      • 2.d3#
    • 1...Sc4
      • 2.d3#
    • 1...d3
      • 2.Re3#
    • 1...dxc5
      • 2.Sxc5#
    • 1...fxg5
      • 2.Sxg5#
  • Tries
    • 1.Sxc7?
      • threat
        • 2.Qxd5#
        • 2.Qe6#
      • 1...dxc5
        • 2.Qxd5#
      • 1...fxg5
        • 2.Qxd5#
      • 1...Sd3
        • 2.Qxd5#
      • 1...Sc4
        • 2.Qxd5#
        • 2.d3#
      • 1...Sxc7!
    • 1.Sg7?
      • threat
        • 2.Qe6#
      • 1...dxc5
        • 2.Qxd5#
      • 1...Sc4
        • 2.d3#
      • 1...Sd3!
    • 1.Bxd4?
      • threat
        • 2.Re3#
      • 1...Sd1
        • 2.d3#
      • 1...Sc4
        • 2.d3#
      • 1...Rb3!
  • Keys
    • 1.Sxd4!
      • threat
        • 2.Qe6#
      • 1...dxc5
        • 2.Qxd5#
      • 1...fxg5
        • 2.Qxf5#
      • 1...Sd3
        • 2.exd3#
      • 1...Sc4
        • 2.d3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 3
  • Sets
    • S(a);N_GUARD::P(A)
    • P(b);N_GUARD::R1(C)
    • P(g);XB(E)::S(G),XP(g)
    • P(h);XP(F)::S(G),XP(h)
  • Tries
    • Try
      • S(G);XP(i)
      • Threat
        • DUALS(2)
      • Vars
        • P(g);XB(E)::QAB1(J),XP(d)
        • P(h);XP(F)::QAB1(J),XP(d)
        • S(a);::QAB1(J),XP(d)
      • Refutation
        • S(j);XS(G)
    • Try
      • S(G);
      • Threat
        • QAR2(J)
      • Vars
        • P(g);XB(E)::QAB1(J),XP(d)
        • S(a);N_GUARD::P(A)
      • Refutation
        • S(a);
    • Try
      • B(E);XP(b)
      • Threat
        • R1(C)
      • Vars
        • S(a);N_GUARD::P(A)
      • Refutation
        • R(f);
  • Actual
    • S(G);XP(b)
    • Threat
      • QAR2(J)
    • Vars
      • P(g);XB(E)::QAB1(J),XP(d)
      • P(h);OGATE,XP(F)::QAB1(J),XP(e)
      • S(a);OGATE::P(B),XS(a)
      • S(a);N_GUARD::P(A)
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