MESON Chess Problem Database

Problem Display
PID: 202710 (2nb4/5PQP/1p1p2NN/1R1Pp1P1/K3k1qR/4P3/3PBnP1/8 w - - 0 1)

Zabirokhin, Piotr

Zadachi i Etyudi, 2015

2nb4/5PQP/1p1p2NN/1R1Pp1P1/K3k1qR/4P3/3PBnP1/8

#2

14 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Sd1
      • 2.Rxg4#
    • 1...Sh1
      • 2.Rxg4#
    • 1...Sd3
      • 2.Bf3#
  • Tries
    • 1.Sxe5?
      • threat
        • 2.Bf3#
      • 1...dxe5
        • 2.Qg6#
      • 1...Bf6!
    • 1.Se7?
      • threat
        • 2.Rb4#
        • 2.Qg6#
      • 1...Bxe7
        • 2.Qg6#
      • 1...Sd3
        • 2.Bf3#
        • 2.Qg6#
      • 1...Sxe7!
    • 1.Qf6?
      • threat
        • 2.Qf3#
        • 2.Qf5#
      • 1...Se7
        • 2.Qf3#
      • 1...Qf4
        • 2.Qf5#
      • 1...Bxf6!
    • 1.f8Q?
      • threat
        • 2.Qf3#
        • 2.Qf5#
      • 1...Se7
        • 2.Qf3#
      • 1...Qf4
        • 2.Qf5#
      • 1...Bf6!
  • Keys
    • 1.Sf4!
      • threat
        • 2.Rb4#
      • 1...Qxe2
        • 2.Qg6#
      • 1...Qxf4
        • 2.Qg6#
      • 1...exf4
        • 2.Qd4#
      • 1...Qd7
        • 2.Bf3#
      • 1...Sd3
        • 2.Bxd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • S(a);N_GUARD::R(F),XQ(c)
    • S(a);SBLOCK::B(B)
  • Tries
    • Try
      • S(J);XP(d)
      • Threat
        • B(B)
      • Vars
        • P(f);SBLOCK,XS(J)::QAB(M)
      • Refutation
        • B(h);
    • Try
      • S(J);
      • Threat
        • DUALS(2)
      • Vars
        • B(h);XS(J)::QAB(M)
      • Refutation
        • S(g);XS(J)
    • Try
      • Q(M);
      • Threat
        • DUALS(2)
      • Vars
        • S(g);::QAB1(M)
        • Q(c);::QAB1(M)
      • Refutation
        • B(h);XQ(M)
    • Try
      • P(L);
      • Threat
        • DUALS(2)
      • Vars
        • S(g);::QAB1(L)
        • Q(c);::QAB1(L)
      • Refutation
        • B(h);
  • Actual
    • S(J);N_PINQ(c)
    • Threat
      • R(G)
    • Vars
      • Q(c);N_GUARD,XB(B)::QAB(M)
      • Q(c);N_GUARD,P_SPINQ(c),XS(J)::QAB(M)
      • P(d);OGATE,XS(J)::QAR1(M)
      • Q(c);N_GUARD,P_PINR(G)::B(B)
      • S(a);N_GUARD::B(B),XS(a)
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