MESON Chess Problem Database

Problem Display
PID: 269916 (4R3/8/6KB/3p4/3P3Q/pPPk1p2/Nb2rp2/Nnn2B2 w - - 0 1)

Stavrietski, A

Shakhmatnaya kompozitsiya, 1997

4R3/8/6KB/3p4/3P3Q/pPPk1p2/Nb2rp2/Nnn2B2

#2

10 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Bxc3
      • 2.Sxc1#
    • 1...Sd2
      • 2.Re3#
    • 1...Sxc3
      • 2.Sb4#
  • Tries
    • 1.Bxe2+?
      • 1...fxe2
        • 2.Qg3#
        • 2.Qh3#
      • 1...Sxe2!
    • 1.Rc8?
      • threat
        • 2.Sb4#
      • 1...Bxc3
        • 2.Sxc1#
      • 1...Sxa2!
    • 1.Qg5?
      • threat
        • 2.Qe3#
        • 2.Qf5#
      • 1...Bxa1
        • 2.Qf5#
      • 1...Bxc3
        • 2.Qe3#
      • 1...Sxc3
        • 2.Qd2#
        • 2.Qe3#
      • 1...Sxa2
        • 2.Qe3#
      • 1...Sd2
        • 2.Re3#
        • 2.Qxd2#
        • 2.Qe3#
      • 1...Sxb3!
    • 1.Qf4?
      • threat
        • 2.Qe3#
        • 2.Qxf3#
        • 2.Qf5#
      • 1...Bxa1
        • 2.Qf5#
      • 1...Bxc3
        • 2.Sxc1#
        • 2.Qe3#
      • 1...Sxc3
        • 2.Sb4#
        • 2.Qd2#
        • 2.Qe3#
      • 1...Sxa2
        • 2.Qe3#
        • 2.Qxf3#
      • 1...Sd2
        • 2.Re3#
        • 2.Qxd2#
        • 2.Qe3#
      • 1...Sxb3!
    • 1.Qg4?
      • threat
        • 2.Qxf3#
        • 2.Qf5#
      • 1...Bxa1
        • 2.Qf5#
      • 1...Bxc3
        • 2.Sxc1#
      • 1...Sxc3
        • 2.Sb4#
      • 1...Sxa2
        • 2.Qxf3#
      • 1...Sd2
        • 2.Re3#
      • 1...Sxb3!
  • Keys
    • 1.Qf6!
      • threat
        • 2.Qxf3#
        • 2.Qf5#
        • 2.Qa6#
      • 1...Bxa1
        • 2.Qf5#
      • 1...Bxc3
        • 2.Sxc1#
      • 1...Sxc3
        • 2.Sb4#
      • 1...Sxa2
        • 2.Qxf3#
      • 1...Sxb3
        • 2.Qa6#
      • 1...Sd2
        • 2.Re3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • B(c);N_GUARD,SBLOCK,XP(E)::S(C),XS(b)
    • S(a);SBLOCK::R1(J)
    • S(a);SBLOCK,XP(E)::S(C)
  • Tries
    • Try
      • B(B);CHECK,XR(d)
      • Refutation
        • S(b);XB(B)
    • Try
      • R(J);
      • Threat
        • S(C)
      • Vars
        • B(c);N_GUARD,XP(E)::S(C),XS(b)
      • Refutation
        • S(b);XS(C)
    • Try
      • Q(G);
      • Threat
        • DUALS(2)
      • Vars
        • B(c);XS(A)::QAB(G)
        • B(c);XP(E)::QAR1(G)
        • S(b);XS(C)::QAR1(G)
      • Refutation
        • S(b);XP(D)
    • Try
      • Q(G);
      • Threat
        • DUALS(3)
      • Vars
        • B(c);XS(A)::QAB(G)
      • Refutation
        • S(b);XP(D)
    • Try
      • Q(G);
      • Threat
        • DUALS(2)
      • Vars
        • B(c);XS(A)::QAB(G)
        • B(c);N_GUARD,SBLOCK,XP(E)::S(C),XS(b)
        • S(a);SBLOCK,XP(E)::S(C)
        • S(b);XS(C)::QAR2(G),XP(h)
        • S(a);SBLOCK::R1(J)
      • Refutation
        • S(b);XP(D)
  • Actual
    • Q(G);
    • Threat
      • DUALS(3)
    • Vars
      • B(c);XS(A)::QAB(G)
      • B(c);N_GUARD,SBLOCK,XP(E)::S(C),XS(b)
      • S(a);SBLOCK,XP(E)::S(C)
      • S(b);XS(C)::QAR2(G),XP(h)
      • S(b);XP(D)::QAB(G)
      • S(a);SBLOCK::R1(J)
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