MESON Chess Problem Database

Problem Display
PID: 267006 (4n3/7p/1pn1pq2/R6Q/2PNkpNp/5R1K/2P5/2rB2B1 w - - 0 1)

Suvorov, Ivan

Zadachi i Etyudi, 2012

4n3/7p/1pn1pq2/R6Q/2PNkpNp/5R1K/2P5/2rB2B1

#2

10 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Qxd4
      • 2.Qxh7#
    • 1...Qd8
      • 2.Qxh7#
    • 1...Rxc2
      • 2.Bxc2#
    • 1...Sxd4
      • 2.Sf2#
    • 1...Sd6
      • 2.Sxf6#
    • 1...Sc7
      • 2.Sxf6#
    • 1...Sg7
      • 2.Sxf6#
  • Tries
    • 1.Sb3?
      • threat
        • 2.Sd2#
        • 2.Sf2#
      • 1...Rxd1
        • 2.Sf2#
      • 1...Qc3
        • 2.Sf2#
        • 2.Qxh7#
      • 1...Qd4
        • 2.Qxh7#
      • 1...Qd8
        • 2.Sf2#
        • 2.Qxh7#
      • 1...Qf5
        • 2.Sd2#
      • 1...Rxc2!
    • 1.Sb5?
      • threat
        • 2.Sf2#
      • 1...Qg5
        • 2.Sc3#
      • 1...Qd4
        • 2.Qxh7#
      • 1...Qf5
        • 2.Sc3#
      • 1...Rxc2!
    • 1.Sxe6?
      • threat
        • 2.Sf2#
        • 2.Qd5#
      • 1...Rxd1
        • 2.Sf2#
      • 1...Rxc2
        • 2.Qd5#
      • 1...Qd4
        • 2.Sg5#
        • 2.Rxf4#
        • 2.Qf5#
        • 2.Qxh7#
      • 1...Qe5
        • 2.Sf2#
      • 1...Qg5
        • 2.Sf2#
        • 2.Sxg5#
      • 1...Qd8
        • 2.Sf2#
        • 2.Rxf4#
        • 2.Qf5#
        • 2.Qxh7#
      • 1...Qf5
        • 2.Qxf5#
      • 1...Sb4
        • 2.Sf2#
      • 1...Se5
        • 2.Sf2#
      • 1...Se7
        • 2.Sf2#
      • 1...Sc7
        • 2.Sf2#
        • 2.Sxf6#
      • 1...Qxe6!
    • 1.Rd5?
      • threat
        • 2.Sf2#
      • 1...Qxd4
        • 2.Qxh7#
      • 1...Rxc2
        • 2.Bxc2#
      • 1...exd5
        • 2.Qxd5#
      • 1...Qf5!
    • 1.Qxh7+?
      • 1...Qg6
        • 2.Qxg6#
      • 1...Qf5!
  • Keys
    • 1.Se2!
      • threat
        • 2.Sf2#
      • 1...Kxf3
        • 2.Sxf6#
      • 1...Qd4
        • 2.Rxf4#
      • 1...Qf5
        • 2.Sc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 6
  • Sets
    • Q(h);N_GUARD,XS(G)::QAB(J),XP(i)
    • Q(h);N_GUARD::QAB(J),XP(i)
    • R(a);OGATE,XP(C)::B(A),XR(a)
    • S(f);SBLOCK,XS(G)::S(H)
    • S(j);N_GUARD::S(H),XQ(h)
  • Tries
    • Try
      • S(G);
      • Threat
        • DUALS(2)
      • Vars
        • R(a);XB(A)::S(H)
        • Q(h);N_GUARD::QAB(J),XP(i)
        • Q(h);P_PINS(H)::S(G)
      • Refutation
        • R(a);XP(C)
    • Try
      • S(G);
      • Threat
        • S(H)
      • Vars
        • Q(h);N_GUARD::S(G)
        • Q(h);N_GUARD::QAB(J),XP(i)
        • Q(h);N_GUARD,P_PINS(H)::S(G)
      • Refutation
        • R(a);XP(C)
    • Try
      • S(G);XP(g)
      • Threat
        • DUALS(2)
      • Vars
        • R(a);XB(A)::S(H)
        • R(a);XP(C)::QAB1(J)
        • Q(h);::S(H)
        • Q(h);N_GUARD,P_PINS(H)::QAB1(J),XQ(h)
        • S(f);::S(H)
      • Refutation
        • Q(h);P_PINS(H),XS(G)
    • Try
      • R(I);
      • Threat
        • S(H)
      • Vars
        • Q(h);N_GUARD,XS(G)::QAB(J),XP(i)
        • R(a);OGATE,XP(C)::B(A),XR(a)
        • P(g);OGATE,XR(I)::QAB1(J),XP(g)
      • Refutation
        • Q(h);P_PINS(H)
    • Try
      • Q(J);CHECK,XP(i)
      • Vars
        • Q(h);N_GUARD,P_SPINQ(h)::QAB(J),XQ(h)
      • Refutation
        • Q(h);P_PINS(H),P_SPINQ(h)
  • Actual
    • S(G);
    • Threat
      • S(H)
    • Vars
      • K(b);S_CUTS(j),S_FLIGHT,XR(D)::QAB(J)+S(H),XQ(h)
      • Q(h);N_GUARD::R1(D),XP(c)
      • Q(h);N_GUARD,P_PINS(H)::S(G)
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