MESON Chess Problem Database

Problem Display
PID: 239138 (k3KQ2/p2RN2q/P5p1/1b6/3Np1p1/8/7B/bR1r4 w - - 0 1)

Dolginovich, Nikolai Osipovich

Sachove umeni (Ceskoslovensky sach), 1976

k3KQ2/p2RN2q/P5p1/1b6/3Np1p1/8/7B/bR1r4

#2

8 + 9

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qh3
      • 2.Kf7#
    • 1...Qh4
      • 2.Kf7#
    • 1...Qh5
      • 2.Kf7#
    • 1...Qxe7+
      • 2.Kxe7#
    • 1...Qf7+
      • 2.Kxf7#
    • 1...Bf1
      • 2.Rb8#
      • 2.Rd8#
    • 1...Be2
      • 2.Rb8#
      • 2.Rd8#
    • 1...Bd3
      • 2.Rb8#
      • 2.Rd8#
    • 1...Ba4
      • 2.Rb8#
    • 1...Bc4
      • 2.Rb8#
      • 2.Rd8#
    • 1...Bxa6
      • 2.Rb8#
    • 1...Bc6
      • 2.Rb8#
    • 1...Bxd7+
      • 2.Kxd7#
  • Tries
    • 1.Sec6?
      • threat
        • 2.Rd8#
      • 1...Qxd7+
        • 2.Kxd7#
      • 1...Qe7+
        • 2.Kxe7#
      • 1...Qf7+
        • 2.Kxf7#
      • 1...Qxh2
        • 2.Rxa7#
      • 1...Bxa6
        • 2.Rb8#
      • 1...Bxc6
        • 2.Rb8#
      • 1...Qh4
        • 2.Rxa7#
      • 1...Rxd4!
    • 1.Rxb5?
      • threat
        • 2.Rb8#
        • 2.Rd8#
      • 1...Qxe7+
        • 2.Kxe7#
      • 1...Qf7+
        • 2.Kxf7#
      • 1...Rxd4
        • 2.Rb8#
      • 1...Rb1
        • 2.Rd8#
      • 1...Rc1
        • 2.Rb8#
      • 1...g3
        • 2.Rd8#
      • 1...Qxh2!
  • Keys
    • 1.Sdc6!
      • threat
        • 2.Rxa7#
      • 1...Qxe7+
        • 2.Kxe7#
      • 1...Qf7+
        • 2.Kxf7#
      • 1...Rxd7
        • 2.Kxd7#
      • 1...Bxc6
        • 2.Rb8#
      • 1...Bd4
        • 2.Rd8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 6
  • Sets
    • Q(h);::QAR(H)+K(G)
    • Q(h);CHECK,XS(F)::QAR(H)+K(G),XQ(h)
    • Q(h);CHECK::QAR(H)+K(G),XQ(h)
    • B(e);OGATE::R1(A)
    • B(e);N_PINR(E),OGATE,XP(D)::R1(A)
    • B(e);CHECK,XR(E)::QAR(H)+K(G),XB(e)
  • Tries
    • Try
      • S(F);N_SPINR(E)
      • Threat
        • R(E)
      • Vars
        • Q(h);CHECK,XR(E)::QAR(H)+K(G),XQ(h)
        • Q(h);CHECK::QAR(H)+K(G),XQ(h)
        • Q(h);N_GUARD,XB(B)::R1(E),XP(g)
        • B(e);OGATE,XP(D)::R1(A)
        • B(e);OGATE,P_PINR(E),XS(F)::R1(A)
        • Q(h);N_GUARD::R1(E),XP(g)
      • Refutation
        • R(b);XS(C)
    • Try
      • R(A);N_SPINR(E),XB(e)
      • Threat
        • DUALS(2)
      • Vars
        • Q(h);CHECK,XS(F)::QAR(H)+K(G),XQ(h)
        • Q(h);CHECK::QAR(H)+K(G),XQ(h)
        • R(b);XS(C)::R1(A)
        • R(b);::R(E)
        • R(b);::R1(A)
        • P(d);::R(E)
      • Refutation
        • Q(h);XB(B)
  • Actual
    • S(C);N_SPINR(E)
    • Threat
      • R1(E),XP(g)
    • Vars
      • Q(h);CHECK,XS(F)::QAR(H)+K(G),XQ(h)
      • Q(h);CHECK::QAR(H)+K(G),XQ(h)
      • R(b);XR(E)::QAR(H)+K(G),XR(b)
      • B(e);OGATE,P_PINR(E),XS(C)::R1(A)
      • B(a);S_CUTR(b)::R(E)
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