MESON Chess Problem Database

Problem Display
PID: 243644 (5RK1/6N1/2p5/3p2p1/2pp4/4kPr1/1pQ1Npn1/3B1Rn1 w - - 0 1)

Balcu, Silviu

Revista Romana de Sah, 1966

5RK1/6N1/2p5/3p2p1/2pp4/4kPr1/1pQ1Npn1/3B1Rn1

#2

8 + 11

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rxf3
      • 2.Re8#
    • 1...Sxe2
      • 2.Qxe2#
    • 1...Sxf3
      • 2.Sf5#
  • Tries
    • 1.Sxg1?
      • threat
        • 2.Qe2#
      • 1...d3
        • 2.Qxf2#
      • 1...Sf4
        • 2.Sf5#
      • 1...fxg1S!
    • 1.Qe4+?
      • 1...Kd2
        • 2.Qxd4#
      • 1...dxe4!
  • Keys
    • 1.Sf4!
      • threat
        • 2.Qxf2#
      • 1...Rxf3
        • 2.Sxg2#
      • 1...Sxf3
        • 2.Qe2#
      • 1...Sxf4
        • 2.Sf5#
      • 1...gxf4
        • 2.Re8#
      • 1...Se2
        • 2.Qxe2#
      • 1...Sh3
        • 2.Qe2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • R(f);SBLOCK,XP(E)::R(G)
    • S(a);OGATE,XS(D)::QAR1(C),XS(a)
    • S(a);SBLOCK,XP(E)::S(F)
  • Tries
    • Try
      • S(D);XS(a)
      • Threat
        • QAR1(C)
      • Vars
        • P(h);SBLOCK::QAB1(C),XP(c)
        • S(d);SBLOCK::S(F)
      • Refutation
        • P(c);XS(D)
    • Try
      • Q(C);CHECK
      • Vars
        • K(e);S_FLIGHT::QAR2(C),XP(h)
      • Refutation
        • P(i);XQ(C)
  • Actual
    • S(D);
    • Threat
      • QAB1(C),XP(c)
    • Vars
      • R(f);N_GUARD,XP(E)::S(D),XS(d)
      • S(a);N_GUARD,XP(E)::QAR1(C)
      • S(d);SBLOCK,XS(D)::S(F)
      • P(j);P_PINS(F),SBLOCK,XS(D)::R(G)
      • S(a);N_GUARD::QAR1(C),XS(a)
      • S(a);N_GUARD::QAR1(C)
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