MESON Chess Problem Database

Problem Display
PID: 202905 (8/5npq/1Bbp3p/1p1P2p1/1p2k1N1/pQ2N1K1/r1p5/8 w - - 0 1)

Syzonenko, Viktor N

Zadachi i Etyudi, 2016

8/5npq/1Bbp3p/1p1P2p1/1p2k1N1/pQ2N1K1/r1p5/8

#2

6 + 13

SOLUTION

  • SOUND
  • Sets
    • 1...Ra1
      • 2.Qxc2#
    • 1...Bxd5
      • 2.Qxd5#
    • 1...Se5
      • 2.Sf2#
  • Tries
    • 1.Sf1?
      • threat
        • 2.Qf3#
      • 1...Kf5
        • 2.Qd3#
      • 1...Qf5
        • 2.Sd2#
      • 1...Se5!
    • 1.Sf5?
      • threat
        • 2.Qf3#
      • 1...Kxf5
        • 2.Qd3#
      • 1...Se5
        • 2.Sxd6#
      • 1...Qxf5!
    • 1.Qc3?
      • threat
        • 2.Sf2#
        • 2.Qd4#
      • 1...c1Q
        • 2.Qd4#
      • 1...c1S
        • 2.Qd4#
      • 1...c1B
        • 2.Qd4#
      • 1...c1R
        • 2.Qd4#
      • 1...Qf5
        • 2.Qd4#
      • 1...bxc3!
    • 1.dxc6?
      • threat
        • 2.Qd5#
      • 1...d5
        • 2.Qxd5#
      • 1...Qf5!
  • Keys
    • 1.Sc4!
      • threat
        • 2.Qf3#
      • 1...Kxd5
        • 2.Sd2#
      • 1...Kf5
        • 2.Qd3#
      • 1...Se5
        • 2.Sxd6#
      • 1...Qf5
        • 2.Sd2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • R(a);N_GUARD::QAB(A),XP(b)
    • B(h);OGATE,XP(E)::QAB1(A),XB(h)
    • S(k);SBLOCK::S(D)
  • Tries
    • Try
      • S(B);
      • Threat
        • QAB1(A)
      • Vars
        • K(e);S_FLIGHT::QAB(A)
        • Q(m);SBLOCK::S(B)
      • Refutation
        • S(k);
    • Try
      • S(B);
      • Threat
        • QAB1(A)
      • Vars
        • K(e);S_FLIGHT,XS(B)::QAB(A)
        • S(k);N_GUARD::S(B),XP(i)
      • Refutation
        • Q(m);XS(B)
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • P(b);::QAR1(A)
        • Q(m);::QAR1(A)
      • Refutation
        • P(d);XQ(A)
    • Try
      • P(E);XB(h)
      • Threat
        • QAB1(A)
      • Vars
        • P(i);::QAB1(A),XP(i)
      • Refutation
        • Q(m);
  • Actual
    • S(B);
    • Threat
      • QAB1(A)
    • Vars
      • K(e);S_FLIGHT,XP(E)::QAB(A)+S(B)
      • K(e);S_FLIGHT::QAB(A)
      • S(k);N_GUARD::S(B),XP(i)
      • Q(m);SBLOCK::S(B)
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