MESON Chess Problem Database

Problem Display
PID: 158802 (2B2B1q/1P3P1p/3Rp1P1/1K1Nk2r/6pP/b2pP1Nb/P6Q/8 w - - 0 1)

Syzonenko, Viktor N

Phenix, 2016

2B2B1q/1P3P1p/3Rp1P1/1K1Nk2r/6pP/b2pP1Nb/P6Q/8

#2

13 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Bb2
      • 2.Qxb2#
    • 1...exd5
      • 2.Re6#
  • Tries
    • 1.Kc6?
      • threat
        • 2.Rxe6#
      • 1...Bxd6
        • 2.Bxd6#
        • 2.Qb2#
      • 1...exd5
        • 2.Re6#
      • 1...Qf6!
    • 1.Sf4?
      • threat
        • 2.Rxe6#
      • 1...Bxd6
        • 2.Qb2#
      • 1...Qf6
        • 2.Sxd3#
      • 1...Kf6+!
    • 1.Sb6?
      • threat
        • 2.Sd7#
        • 2.Rxe6#
      • 1...Qxf8
        • 2.Rxe6#
      • 1...Bxd6
        • 2.Qb2#
      • 1...Qf6
        • 2.Sc4#
        • 2.Sd7#
      • 1...Kf6+!
    • 1.Qh1?
      • threat
        • 2.Rxe6#
        • 2.Qe4#
      • 1...Qxf8
        • 2.Rxe6#
      • 1...Bxd6
        • 2.Qe4#
      • 1...exd5
        • 2.Re6#
        • 2.Qxd5#
      • 1...Qf6
        • 2.Qe4#
      • 1...Bg2!
    • 1.Qg2?
      • threat
        • 2.Rxe6#
        • 2.Qe4#
      • 1...Qxf8
        • 2.Rxe6#
      • 1...Bxd6
        • 2.Qe4#
      • 1...exd5
        • 2.Re6#
        • 2.Qxd5#
      • 1...Qf6
        • 2.Qe4#
      • 1...Bxg2!
  • Keys
    • 1.Se7!
      • threat
        • 2.Rxe6#
      • 1...Kxd6+
        • 2.Sgf5#
      • 1...Kf6+
        • 2.Sxh5#
      • 1...Bxd6
        • 2.Qb2#
      • 1...Qf6
        • 2.Sc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • B(a);N_GUARD::QAB(B),XB(a)
    • P(g);SBLOCK,XS(G)::R1(H)
  • Tries
    • Try
      • K(F);S_FLIGHT
      • Threat
        • R1(H),XP(g)
      • Vars
        • P(g);XS(G)::R1(H)
      • Refutation
        • Q(i);
    • Try
      • S(G);
      • Threat
        • R1(H),XP(g)
      • Vars
        • B(a);N_GUARD,XR(H)::QAB(B)
        • Q(i);SBLOCK::S(G),XP(b)
      • Refutation
        • K(e);CHECK,P_SPINP(g),S_FLIGHT
    • Try
      • S(G);
      • Threat
        • DUALS(2)
      • Vars
        • Q(i);XB(M)::R1(H),XP(g)
        • B(a);N_GUARD,XR(H)::QAB(B)
      • Refutation
        • K(e);CHECK,P_SPINP(g),S_FLIGHT
    • Try
      • Q(B);
      • Threat
        • DUALS(2)
      • Vars
        • Q(i);XB(M)::R1(H),XP(g)
        • B(a);XR(H)::QAR1(B)
        • Q(i);::QAR1(B)
      • Refutation
        • B(c);
    • Try
      • Q(B);
      • Threat
        • DUALS(2)
      • Vars
        • Q(i);XB(M)::R1(H),XP(g)
        • B(a);XR(H)::QAR1(B)
        • Q(i);::QAR1(B)
      • Refutation
        • B(c);XQ(B)
  • Actual
    • S(G);
    • Threat
      • R1(H),XP(g)
    • Vars
      • K(e);CHECK,S_FLIGHT,XR(H)::QAB(B)+S(D),DCHECK
      • K(e);CHECK,P_SPINP(g),S_FLIGHT::S(D),XR(f)
      • B(a);N_GUARD,SBLOCK,XR(H)::QAB(B)
      • Q(i);SBLOCK::S(G)
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