MESON Chess Problem Database

Problem Display
PID: 216828 (1Bb2bq1/3nn2R/4kNP1/1PPR4/4N1P1/1P6/3pQPK1/8 w - - 0 1)

Shanshin, Valery Yurevich

Slesarenko, Anatoly Vasilevich

Zadachi i Etyudi, 1999

1Bb2bq1/3nn2R/4kNP1/1PPR4/4N1P1/1P6/3pQPK1/8

#2

13 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Sxc5
      • 2.Re5#
    • 1...Se5
      • 2.Rxe5#
      • 2.Rd6#
    • 1...Sb6
      • 2.Re5#
    • 1...Sf5
      • 2.gxf5#
  • Tries
    • 1.Sxd2+?
      • 1...Se5
        • 2.Rd6#
        • 2.Qxe5#
      • 1...Kxf6!
    • 1.Sc3+?
      • 1...Se5
        • 2.Rd6#
        • 2.Qxe5#
      • 1...Kxf6!
    • 1.Sg3+?
      • 1...Se5
        • 2.Rd6#
        • 2.Qxe5#
      • 1...Kxf6!
    • 1.Sd6+?
      • 1...Se5
        • 2.Qxe5#
      • 1...Kxf6!
    • 1.Rf5?
      • threat
        • 2.Sg5#
      • 1...Sxf6
        • 2.Sxf6#
      • 1...Sxf5
        • 2.Qc4#
      • 1...Bb7!
    • 1.Rf7?
      • threat
        • 2.Sg5#
      • 1...Sxf6
        • 2.Sxf6#
      • 1...Qxf7!
    • 1.Qc4?
      • threat
        • 2.Re5#
      • 1...Sxf6
        • 2.Sg5#
      • 1...Sxd5
        • 2.Qxd5#
      • 1...Se5
        • 2.Rxe5#
        • 2.Rd6#
      • 1...Sxb8!
  • Keys
    • 1.Se8!
      • threat
        • 2.Sc7#
      • 1...Kxd5
        • 2.Qc4#
      • 1...Sxd5
        • 2.Sg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • S(c);N_GUARD,XP(H)::R1(I)
    • S(c);N_GUARD::R1(I)
    • S(d);OGATE::P(F),XS(d)
  • Tries
    • Try
      • S(E);CHECK,XP(a)
      • Refutation
        • K(b);P-FLIGHT,XS(J)
    • Try
      • S(E);CHECK
      • Refutation
        • K(b);P-FLIGHT,XS(J)
    • Try
      • S(E);CHECK
      • Refutation
        • K(b);P-FLIGHT,XS(J)
    • Try
      • S(E);CHECK
      • Vars
        • S(c);N_GUARD,P_SPINS(c)::QAR1(A),XS(c)
      • Refutation
        • K(b);P-FLIGHT,XS(J)
    • Try
      • R(I);
      • Threat
        • QAR(A)+S(E),DCHECK
      • Vars
        • S(c);XS(J)::QAR(A)+S(E),XS(c)
        • S(d);N_GUARD,XR(I)::QAB(A)
      • Refutation
        • B(e);P_PINS(E)
    • Try
      • R(L);
      • Threat
        • QAR(A)+S(E),DCHECK
      • Vars
        • S(c);XS(J)::QAR(A)+S(E),XS(c)
      • Refutation
        • Q(g);XR(L)
    • Try
      • Q(A);
      • Threat
        • QAB(A)+R(I),DCHECK
      • Vars
        • S(c);SBLOCK,XS(J)::S(E)
        • S(d);OGATE,P_SPINS(d),XR(I)::QAB1(A),XS(d)
      • Refutation
        • S(c);XB(M)
  • Actual
    • S(J);
    • Threat
      • S(J)
    • Vars
      • K(b);OGATEB,S_FLIGHT,XR(I)::QAB1(A)
      • S(d);SBLOCK,XR(I)::QAR(A)+S(E),DCHECK
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