MESON Chess Problem Database

Problem Display
PID: 23703 (1r3bQ1/8/2p2Np1/1P2B3/2p3Bn/p2k3b/KP3R2/N3Rn2 w - - 0 1)

Novitski, Petr Adrinovich

Zalokotsky, Roman Fedorovich (aka Fedorovich, Roman)

3rd Prize, Troll, 1997-1998

1r3bQ1/8/2p2Np1/1P2B3/2p3Bn/p2k3b/KP3R2/N3Rn2

#2

10 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Sg2
      • 2.Qxg6#
    • 1...Sf3
      • 2.Qxg6#
    • 1...cxb5
      • 2.Qd5#
    • 1...c5
      • 2.Qd5#
  • Tries
    • 1.Sb3?
      • threat
        • 2.Sc1#
      • 1...cxb3+
        • 2.Qxb3#
      • 1...Sd2
        • 2.Rxd2#
      • 1...Bh6
        • 2.Sc5#
      • 1...axb2!
    • 1.Sd5?
      • threat
        • 2.Sf4#
      • 1...cxd5
        • 2.Qxd5#
      • 1...Se3
        • 2.Rxe3#
      • 1...Bh6
        • 2.Sb4#
      • 1...Sg2
        • 2.Qxg6#
      • 1...g5!
    • 1.Rd1+?
      • 1...Ke3
        • 2.Bd4#
        • 2.Re2#
      • 1...Sd2!
    • 1.Rc2?
      • threat
        • 2.Qxc4#
      • 1...cxb5
        • 2.Qd5#
      • 1...Sd2
        • 2.Rc3#
      • 1...Se3
        • 2.Be2#
      • 1...c3!
    • 1.Qxg6+?
      • 1...Sf5
        • 2.Qxf5#
      • 1...Sxg6!
  • Keys
    • 1.Re4!
      • threat
        • 2.Qxc4#
      • 1...cxb5
        • 2.Qd5#
      • 1...Sd2
        • 2.Be2#
      • 1...Se3
        • 2.Rd4#
      • 1...c3
        • 2.Qc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • S(f);N_GUARD::QAB(J),XP(h)
    • P(g);N_GUARD,XP(G)::QAR2(J)
    • P(g);N_GUARD::QAR2(J)
  • Tries
    • Try
      • S(A);
      • Threat
        • S(A)
      • Vars
        • P(e);CHECK,OGATE,XS(A)::QAR2(J),XP(e)
        • S(a);N_GUARD::R1(E),XS(a)
        • B(j);N_GUARD::S(A)
      • Refutation
        • P(b);XP(D)
    • Try
      • S(I);
      • Threat
        • S(I)
      • Vars
        • P(g);OGATE,XS(I)::QAR2(J),XP(g)
        • S(a);N_GUARD::R1(B),XS(a)
        • B(j);N_GUARD::S(I)
        • S(f);N_GUARD::QAB(J),XP(h)
      • Refutation
        • P(h);
    • Try
      • R(B);CHECK
      • Refutation
        • S(a);P_SPINS(a)
    • Try
      • R(E);
      • Threat
        • QAB1(J),XP(e)
      • Vars
        • P(g);N_GUARD,XP(G)::QAR2(J)
        • S(a);SBLOCK::R1(E)
        • S(a);SBLOCK::B(F)
      • Refutation
        • P(e);
    • Try
      • Q(J);CHECK,XP(h)
      • Vars
        • S(f);N_GUARD,P_SPINS(f)::QAB(J),XS(f)
      • Refutation
        • S(f);XQ(J)
  • Actual
    • R(B);
    • Threat
      • QAB1(J),XP(e)
    • Vars
      • P(g);N_GUARD,XP(G)::QAR2(J)
      • S(a);SBLOCK::B(F)
      • S(a);SBLOCK::R1(B)
      • P(e);::QAB1(J)
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