MESON Chess Problem Database

Problem Display
PID: 190324 (3b4/8/2q1Q3/n1Bp2R1/2k3Pr/1NN4P/1PBpP1K1/3r2n1 w - - 0 1)

Dikusarov, Andrey Nikolayovich

Sachova skladba, 2010

3b4/8/2q1Q3/n1Bp2R1/2k3Pr/1NN4P/1PBpP1K1/3r2n1

#2

11 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Qa4
      • 2.Qxd5#
    • 1...Qb5
      • 2.Qxd5#
    • 1...Qe8
      • 2.Qxd5#
    • 1...Qa6
      • 2.Qxd5#
      • 2.Qxa6#
    • 1...Qb6
      • 2.Qxd5#
    • 1...Qc7
      • 2.Qxd5#
      • 2.Qa6#
    • 1...Qc8
      • 2.Qxd5#
    • 1...Rxg4+
      • 2.Rxg4#
    • 1...Sxe2
      • 2.Qxe2#
  • Keys
    • 1.Rxd5!
      • threat
        • 2.Qe4#
      • 1...Qxd5+
        • 2.Qxd5#
      • 1...Rxg4+
        • 2.Qxg4#
      • 1...Qxc5
        • 2.Rd4#
      • 1...Qxe6
        • 2.Rd4#
      • 1...Sxe2
        • 2.Qxe2#
      • 1...Sxb3
        • 2.Bd3#
      • 1...Qe8
        • 2.Rd4#
      • 1...Bf6
        • 2.Sxa5#
      • 1...Sf3
        • 2.Rd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 6
    • REMOVED MATES = 4
  • Sets
    • Q(h);N_GUARD::QAB1(K),XP(g)
    • R(e);CHECK,OGATE,XP(H)::R(J),XR(e)
    • S(b);OGATE,XP(C)::QAB(K),XS(b)
  • Actual
    • R(J);P_SPINR(J),XP(g)
    • Threat
      • QAR2(K)
    • Vars
      • Q(h);CHECK,OGATE,P_SPINQ(h),XR(J)::QAB1(K),XQ(h)
      • R(e);CHECK,OGATE,XP(H)::QAR(K),XR(e)
      • Q(h);N_PINR(J),XB(I)::QAB(K)+R(J),DCHECK
      • Q(h);N_PINR(J),XQ(K)::R1(J)
      • S(b);OGATE,XP(C)::QAB(K),XS(b)
      • S(f);SBLOCK,XS(E)::B(B)
      • Q(h);N_PINR(J)::QAB(K)+R(J),DCHECK
      • B(i);N_GUARD::S(E),XS(f)
      • S(b);N_PINR(J)::QAB(K)+R(J),DCHECK
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