MESON Chess Problem Database

Problem Display
PID: 232809 (6Q1/8/8/8/2p1Np2/2K2k2/p2P1NRn/R7 w - - 0 1)

Kichigin, Viktor Vladimirovich

Freie Presse, 1980

6Q1/8/8/8/2p1Np2/2K2k2/p2P1NRn/R7

#2

7 + 5

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Sf1
      • 2.Qg4#
    • 1...Sg4
      • 2.Qxg4#
  • Tries
    • 1.Kxc4?
      • 1...Sg4
        • 2.Qxg4#
      • 1...Sf1
        • 2.Qg4#
      • 1...Ke2!
    • 1.Sc5?
      • 1...Sg4
        • 2.Qxg4#
      • 1...Sf1
        • 2.Qg4#
      • 1...Ke2!
    • 1.Sg5+?
      • 1...Ke2
        • 2.Sh1#
        • 2.Sd3#
        • 2.Sfh3#
        • 2.Sfe4#
        • 2.Sg4#
        • 2.Qxc4#
        • 2.Qe6#
        • 2.Qe8#
      • 1...Kxg2!
    • 1.Sd6?
      • 1...Sg4
        • 2.Qxg4#
      • 1...Sf1
        • 2.Qg4#
      • 1...Ke2!
    • 1.Sf6?
      • 1...Sg4
        • 2.Qxg4#
      • 1...Sf1
        • 2.Qg4#
      • 1...Ke2!
    • 1.Rxa2?
      • 1...Sg4
        • 2.Qxg4#
      • 1...Sf1
        • 2.Qg4#
      • 1...Ke2!
    • 1.Rgg1?
      • 1...Sf1
        • 2.Qg4#
      • 1...Sg4
        • 2.Qxg4#
      • 1...Ke2!
    • 1.Rg3+?
      • 1...Ke2
        • 2.Qxc4#
      • 1...fxg3!
    • 1.Qg3+?
      • 1...Ke2
        • 2.Sh1#
        • 2.Sd3#
        • 2.Sh3#
        • 2.Sg4#
      • 1...fxg3!
    • 1.Qg5?
      • 1...Sg4
        • 2.Qxg4#
      • 1...Sf1
        • 2.Qg4#
      • 1...Ke2!
    • 1.Qg6?
      • 1...Sg4
        • 2.Qxg4#
      • 1...Sf1
        • 2.Qg4#
      • 1...Ke2!
    • 1.Qg7?
      • 1...Sg4
        • 2.Qxg4#
      • 1...Sf1
        • 2.Qg4#
      • 1...Ke2!
    • 1.Qc8?
      • 1...Kxg2
        • 2.Qh3#
      • 1...Sf1
        • 2.Qg4#
      • 1...Sg4
        • 2.Qxg4#
      • 1...Ke2!
  • Keys
    • 1.Qe6!
      • 1...Ke2
        • 2.Sg5#
      • 1...Kxg2
        • 2.Qh3#
      • 1...Sf1
        • 2.Qg4#
      • 1...Sg4
        • 2.Qxg4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • S(b);N_GUARD::QAB1(G)
    • S(b);N_GUARD::QAB1(G),XS(b)
  • Tries
    • Try
      • K(E);P-FLIGHT,XP(d)
      • Vars
        • S(b);N_GUARD::QAB1(G),XS(b)
        • S(b);N_GUARD::QAB1(G)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • S(F);
      • Vars
        • S(b);N_GUARD::QAB1(G),XS(b)
        • S(b);N_GUARD::QAB1(G)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • S(F);CHECK
      • Refutation
        • K(c);S_FLIGHT,XR(D)
    • Try
      • S(F);
      • Vars
        • S(b);N_GUARD::QAB1(G),XS(b)
        • S(b);N_GUARD::QAB1(G)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • S(F);
      • Vars
        • S(b);N_GUARD::QAB1(G),XS(b)
        • S(b);N_GUARD::QAB1(G)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • R(A);XP(a)
      • Vars
        • S(b);N_GUARD::QAB1(G),XS(b)
        • S(b);N_GUARD::QAB1(G)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • R(D);
      • Vars
        • S(b);N_GUARD::QAB1(G)
        • S(b);N_GUARD::QAB1(G),XS(b)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • R(D);CHECK
      • Vars
        • K(c);S_FLIGHT::QAB(G),XP(d)
      • Refutation
        • P(e);XR(D)
    • Try
      • Q(G);CHECK
      • Refutation
        • P(e);XQ(G)
    • Try
      • Q(G);
      • Vars
        • S(b);N_GUARD::QAB1(G),XS(b)
        • S(b);N_GUARD::QAB1(G)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(G);
      • Vars
        • S(b);N_GUARD::QAB1(G),XS(b)
        • S(b);N_GUARD::QAB1(G)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(G);
      • Vars
        • S(b);N_GUARD::QAB1(G),XS(b)
        • S(b);N_GUARD::QAB1(G)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(G);
      • Vars
        • K(c);S_FLIGHT,XR(D)::QAB1(G)
        • S(b);N_GUARD::QAB1(G)
        • S(b);N_GUARD::QAB1(G),XS(b)
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • Q(G);
    • Vars
      • K(c);S_FLIGHT::QAR(G)+S(F)
      • K(c);S_FLIGHT,XR(D)::QAB1(G)
      • S(b);N_GUARD::QAB1(G)
      • S(b);N_GUARD::QAB1(G),XS(b)
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