MESON Chess Problem Database

Problem Display
PID: 237713 (1b4r1/3p1R2/5Qp1/2pRP3/Kp2kP2/1BP5/6P1/1b1N1n2 w - - 0 1)

Dikusarov, Andrey Nikolayovich

Shakhmaty v SSSR, 1970

1b4r1/3p1R2/5Qp1/2pRP3/Kp2kP2/1BP5/6P1/1b1N1n2

#2

10 + 9

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rc8
      • 2.Qxg6#
    • 1...Rd8
      • 2.Qxg6#
    • 1...Re8
      • 2.Qxg6#
    • 1...Rf8
      • 2.Qxg6#
    • 1...Rh8
      • 2.Qxg6#
    • 1...Bxe5
      • 2.Qxe5#
    • 1...Se3
      • 2.Sf2#
    • 1...c4
      • 2.Rd4#
    • 1...g5
      • 2.Qf5#
  • Tries
    • 1.Rdxd7?
      • threat
        • 2.Qc6#
      • 1...Rc8
        • 2.Qxg6#
      • 1...Se3
        • 2.Sf2#
      • 1...Bd6!
    • 1.Qh4?
      • threat
        • 2.f5#
      • 1...Bxe5
        • 2.fxe5#
      • 1...c4
        • 2.Rd4#
      • 1...Sh2
        • 2.Qe1#
      • 1...Se3
        • 2.Sf2#
      • 1...g5
        • 2.fxg5#
      • 1...Rh8!
    • 1.Qc6?
      • threat
        • 2.Rd4#
        • 2.Rdxd7#
      • 1...bxc3
        • 2.Rdxd7#
      • 1...Rc8
        • 2.Rd4#
        • 2.Qxg6#
      • 1...Bd6
        • 2.Rd4#
      • 1...Se3
        • 2.Sf2#
        • 2.Rd4#
      • 1...d6
        • 2.Rd4#
        • 2.Rxd6#
      • 1...dxc6!
  • Keys
    • 1.Qa6!
      • threat
        • 2.Qc4#
      • 1...Bxe5
        • 2.Rxe5#
      • 1...c4
        • 2.Rd4#
        • 2.Qxc4#
      • 1...Bd3
        • 2.Qxd3#
      • 1...Sd2
        • 2.Qe2#
      • 1...Se3
        • 2.Sf2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 7
  • Sets
    • R(i);N_GUARD::QAB(I),XP(f)
    • B(h);OGATE,XP(H)::QAR1(I),XB(h)
    • S(b);SBLOCK::S(A)
    • P(e);N_GUARD::R1(G)
    • P(f);N_GUARD::QAB1(I)
  • Tries
    • Try
      • R(G);XP(g)
      • Threat
        • QAB(I)
      • Vars
        • R(i);N_GUARD::QAB(I),XP(f)
        • S(b);SBLOCK::S(A)
      • Refutation
        • B(h);
    • Try
      • Q(I);
      • Threat
        • QAR(I)+P(F)
      • Vars
        • B(h);OGATE,XP(H)::QAR(I)+P(F),XB(h)
        • P(e);N_GUARD::R1(G)
        • S(b);N_GUARD::QAR(I)
        • S(b);SBLOCK::S(A)
        • P(f);OGATE::QAR(I)+P(F),XP(f)
      • Refutation
        • R(i);
    • Try
      • Q(I);
      • Threat
        • DUALS(2)
      • Vars
        • P(c);XP(D)::QAB(I)+R(G),XP(g)
        • B(h);::QAB(I)+R(G),DCHECK
      • Refutation
        • P(g);XQ(I)
  • Actual
    • Q(I);
    • Threat
      • QAR2(I)
    • Vars
      • B(h);OGATE,XP(H)::R1(G),XB(h)
      • B(a);N_GUARD::QAB1(I),XB(a)
      • S(b);N_GUARD::QAR2(I)
      • S(b);SBLOCK::S(A)
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