MESON Chess Problem Database

Problem Display
PID: 54761 (5r2/n2RNN1q/1ppBB3/3P1b1R/2Pkp3/P7/2Q2pP1/5K2 w - - 0 1)

Storozhenko, Ivan Ivanovich

Uralski Problemist, 1996

5r2/n2RNN1q/1ppBB3/3P1b1R/2Pkp3/P7/2Q2pP1/5K2

#2

12 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Ke3
      • 2.Qc3#
    • 1...Qg8
      • 2.Sxf5#
    • 1...Qh6
      • 2.Sxf5#
    • 1...Qg7
      • 2.Sxf5#
    • 1...Qh8
      • 2.Sxf5#
  • Tries
    • 1.Sxc6+?
      • 1...Ke3
        • 2.Qe2#
        • 2.Qc3#
      • 1...Sxc6!
    • 1.Se5?
      • threat
        • 2.Qd2#
      • 1...Ke3
        • 2.Qxf2#
      • 1...e3
        • 2.Sf3#
      • 1...Qh6!
    • 1.Bb4?
      • threat
        • 2.Qc3#
      • 1...Ke3
        • 2.Qd2#
      • 1...e3
        • 2.dxc6#
      • 1...Sb5!
    • 1.Be5+?
      • 1...Ke3
        • 2.Qe2#
        • 2.Qc3#
      • 1...Kc5!
    • 1.Qb2+?
      • 1...Ke3
        • 2.Qc3#
      • 1...Kxc4
        • 2.Se5#
      • 1...Kd3!
  • Keys
    • 1.dxc6!
      • threat
        • 2.Qd2#
      • 1...Ke3
        • 2.Qc3#
      • 1...Bxe6
        • 2.Bc5#
      • 1...Qh6
        • 2.Sxf5#
      • 1...e3
        • 2.Bb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • K(b);S_FLIGHT::QAR2(B)
    • Q(h);N_GUARD::S(K),XB(d)
  • Tries
    • Try
      • S(K);CHECK,XP(f)
      • Refutation
        • S(g);XS(K)
    • Try
      • S(L);
      • Threat
        • QAR2(B)
      • Vars
        • K(b);S_FLIGHT::QAB1(B),XP(a)
        • P(c);N_GUARD,SBLOCK::S(L)
      • Refutation
        • Q(h);
    • Try
      • B(H);
      • Threat
        • QAB1(B)
      • Vars
        • K(b);S_FLIGHT::QAB1(B)
        • P(c);SBLOCK::R(J)+P(F),XP(f)
      • Refutation
        • S(g);
    • Try
      • B(H);CHECK
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(b);S_FLIGHT::QAR2(B)
        • K(b);P-FLIGHT,XP(E)::S(L)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • P(F);XP(f)
    • Threat
      • QAR2(B)
    • Vars
      • K(b);S_FLIGHT::QAR2(B)
      • B(d);XB(I)::R(J)+B(H),DCHECK
      • Q(h);N_GUARD::S(K),XB(d)
      • P(c);SBLOCK::R(J)+B(H)
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