MESON Chess Problem Database

Problem Display
PID: 156622 (3R4/1n1qp2K/4B3/Rr4p1/2p1k1N1/1p2PN2/8/5Qn1 w - - 0 1)

Amirov, Talip Khasanovich

Revista Romana de Sah, 1978

3R4/1n1qp2K/4B3/Rr4p1/2p1k1N1/1p2PN2/8/5Qn1

#2

8 + 9

15148 Sadier Collection 2016

SOLUTION

  • SOUND
  • Sets
    • 1...Qc6
      • 2.Sd2#
      • 2.Rd4#
    • 1...Qxe6
      • 2.Sd2#
    • 1...Qc8
      • 2.Sd2#
      • 2.Rd4#
    • 1...Qe8
      • 2.Sd2#
      • 2.Rd4#
    • 1...Qd2
      • 2.Sxd2#
    • 1...Qd4
      • 2.Rxd4#
    • 1...Qc7
      • 2.Sd2#
      • 2.Rd4#
    • 1...Rb4
      • 2.Sxg5#
      • 2.Re5#
    • 1...Re5
      • 2.Rxe5#
    • 1...Rb6
      • 2.Sxg5#
      • 2.Re5#
    • 1...Sc5
      • 2.Sxg5#
    • 1...Sd6
      • 2.Sd2#
  • Tries
    • 1.Sd4?
      • threat
        • 2.Qb1#
      • 1...Qxd4
        • 2.Rxd4#
      • 1...Sc5
        • 2.Qf5#
      • 1...c3!
    • 1.Rxd7?
      • threat
        • 2.Sd2#
        • 2.Rd4#
      • 1...Sxf3
        • 2.Qb1#
      • 1...Se2
        • 2.Sd2#
      • 1...Sd6
        • 2.Sd2#
      • 1...c3
        • 2.Rd4#
      • 1...Rd5!
    • 1.Qxc4+?
      • 1...Qd4
        • 2.Sd2#
      • 1...Kxf3!
    • 1.Qb1+?
      • 1...Qd3
        • 2.Sd2#
      • 1...Kxf3!
  • Keys
    • 1.Sfe5!
      • threat
        • 2.Qf5#
      • 1...Qxe6
        • 2.Rd4#
        • 2.Qb1#
      • 1...Rxe5
        • 2.Rxe5#
      • 1...Sf3
        • 2.Qxf3#
      • 1...Sd6
        • 2.Qb1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 4
  • Sets
    • Q(h);N_GUARD,XB(F)::S(C)
    • Q(h);N_GUARD::S(C),XQ(h)
    • Q(h);OGATE::R1(H),XQ(h)
    • R(e);OGATE::R1(E),XR(e)
    • S(g);S_CUTR(e)::S(C),XP(f)
    • S(g);S_CUTQ(h)::S(C)
  • Tries
    • Try
      • S(C);
      • Threat
        • QAB(A)
      • Vars
        • Q(h);OGATE,XS(C)::R1(H),XQ(h)
        • S(g);S_CUTR(e)::QAB1(A)
      • Refutation
        • P(c);
    • Try
      • R(H);XQ(h)
      • Threat
        • DUALS(2)
      • Vars
        • S(a);SBLOCK,XS(C)::QAB(A)
        • S(a);::S(C)
        • S(g);::S(C)
        • P(c);::R1(H)
      • Refutation
        • R(e);
    • Try
      • Q(A);CHECK,XP(c)
      • Vars
        • Q(h);P_SPINQ(h)::S(C)
      • Refutation
        • K(d);S_FLIGHT,XS(C)
    • Try
      • Q(A);CHECK
      • Vars
        • Q(h);P_SPINQ(h)::S(C)
      • Refutation
        • K(d);S_FLIGHT,XS(C)
  • Actual
    • S(C);
    • Threat
      • QAB1(A)
    • Vars
      • R(e);OGATE,XS(C)::R1(E),XR(e)
      • S(a);N_GUARD::QAB1(A),XS(a)
      • S(g);S_CUTQ(h)::QAB(A)
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