MESON Chess Problem Database

Problem Display
PID: 197269 (N7/1q1rPB2/3b1p2/PppP1P2/1rkN2K1/2p1Q3/2P5/2n5 w - - 0 1)

Jankevics, Karlis

Sachova skladba, 2008

N7/1q1rPB2/3b1p2/PppP1P2/1rkN2K1/2p1Q3/2P5/2n5

#2

10 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Qxd5
      • 2.Sb6#
    • 1...Qc6
      • 2.dxc6#
    • 1...Qc8
      • 2.Sb6#
    • 1...Qb6
      • 2.Sxb6#
    • 1...Sa2
      • 2.Qd3#
    • 1...Se2
      • 2.Qd3#
    • 1...Sb3
      • 2.Qd3#
    • 1...Sd3
      • 2.Qxd3#
      • 2.cxd3#
  • Tries
    • 1.Se2?
      • threat
        • 2.Qxc3#
        • 2.Qe4#
      • 1...Rxe7
        • 2.Qxc3#
      • 1...Sxe2
        • 2.Qd3#
      • 1...Rb3
        • 2.Qe4#
      • 1...Sa2
        • 2.Qd3#
        • 2.Qe4#
      • 1...Sb3
        • 2.Qxc3#
        • 2.Qd3#
      • 1...Sd3
        • 2.Qxd3#
        • 2.Qe4#
      • 1...Be5!
    • 1.Sb3?
      • threat
        • 2.Qe4#
      • 1...Sxb3
        • 2.Qd3#
      • 1...Be5
        • 2.Qxc5#
      • 1...Se2
        • 2.Qxe2#
        • 2.Qd3#
      • 1...Rxe7!
    • 1.Sc6?
      • threat
        • 2.Qe4#
      • 1...Be5
        • 2.d6#
      • 1...Se2
        • 2.Qxe2#
        • 2.Qd3#
      • 1...Sb3
        • 2.Qe2#
        • 2.Qd3#
      • 1...Rxe7!
  • Keys
    • 1.Se6!
      • threat
        • 2.Qe4#
      • 1...Kxd5+
        • 2.Sd4#
      • 1...Qxd5
        • 2.Sb6#
      • 1...Be5
        • 2.Qxc5#
      • 1...Se2
        • 2.Qd3#
      • 1...Sb3
        • 2.Qd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • Q(i);N_GUARD,P_SPINQ(i),XP(F)::S(J)
    • Q(i);OGATE::B(I)+P(F),XQ(i)
    • Q(i);N_GUARD::S(J)
    • Q(i);N_GUARD::S(J),XQ(i)
    • S(a);N_GUARD::QAB1(B)
  • Tries
    • Try
      • S(C);
      • Threat
        • DUALS(2)
      • Vars
        • R(j);XP(H)::QAR1(B),XP(b)
        • S(a);N_GUARD,XS(C)::QAB1(B)
        • R(c);::QAR2(B)
      • Refutation
        • B(g);
    • Try
      • S(C);
      • Threat
        • QAR2(B)
      • Vars
        • S(a);N_GUARD,XS(C)::QAB1(B)
        • B(g);N_GUARD::QAR1(B),XP(f)
      • Refutation
        • R(j);XP(H)
    • Try
      • S(C);
      • Threat
        • QAR2(B)
      • Vars
        • B(g);OGATE::B(I)+P(F)
      • Refutation
        • R(j);XP(H)
  • Actual
    • S(C);
    • Threat
      • QAR2(B)
    • Vars
      • K(d);CHECK,S_FLIGHT,XP(F)::B(I)+S(C)
      • Q(i);N_GUARD,XP(F)::S(J)
      • B(g);N_GUARD::QAR1(B),XP(f)
      • S(a);N_GUARD::QAB1(B)
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