MESON Chess Problem Database

Problem Display
PID: 247443 (1b2r1B1/1K1P4/2p1bp1B/3R1N2/2QPk3/1p6/1r2Pn1N/8 w - - 0 1)

Marandiuk, Mikhail Nazarovich

Uralski Problemist, 1998

1b2r1B1/1K1P4/2p1bp1B/3R1N2/2QPk3/1p6/1r2Pn1N/8

#2

10 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Bg3
      • 2.Sxg3#
    • 1...Bd6
      • 2.Sxd6#
    • 1...Ba7
      • 2.Sg3#
      • 2.Sd6#
    • 1...Sd3
      • 2.exd3#
    • 1...c5
      • 2.dxc5#
  • Tries
    • 1.Bh7?
      • threat
        • 2.Sg3#
        • 2.Sd6#
      • 1...Bxf5
        • 2.Bxf5#
      • 1...Bg3
        • 2.Sxg3#
        • 2.Sd6#
      • 1...Bd6
        • 2.Sg3#
        • 2.Sxd6#
      • 1...Bf4!
    • 1.Re5+?
      • 1...fxe5
        • 2.Sg3#
      • 1...Bxe5!
    • 1.Qc3?
      • threat
        • 2.Qf3#
      • 1...Kxd5
        • 2.Qxc6#
      • 1...Sd3!
    • 1.Qxc6?
      • threat
        • 2.Re5#
      • 1...Bxd5
        • 2.Qxd5#
      • 1...Bxf5
        • 2.Rd6#
      • 1...Be5
        • 2.Rxe5#
      • 1...Rxe2!
  • Keys
    • 1.Rd6!
      • threat
        • 2.Sg3#
      • 1...Kxf5
        • 2.Bh7#
      • 1...Rxg8
        • 2.Qxe6#
      • 1...Bxf5
        • 2.Qxc6#
      • 1...Bxd6
        • 2.Sxd6#
      • 1...Sh1
        • 2.Qd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 3
  • Sets
    • B(h);N_GUARD::S(F),XB(h)
    • S(b);OGATE::P(A),XS(b)
    • P(e);OGATE::QAR(C)+P(D),XP(e)
  • Tries
    • Try
      • B(J);
      • Threat
        • DUALS(2)
      • Vars
        • B(f);OGATE,P_SPINB(f),XS(F)::B(J),XB(f)
      • Refutation
        • B(h);
    • Try
      • R(E);CHECK
      • Vars
        • P(g);XR(E)::S(F)
      • Refutation
        • B(h);XR(E)
    • Try
      • Q(C);
      • Threat
        • QAB1(C)
      • Vars
        • K(d);OGATEB,P_SPINB(f),S_FLIGHT,XR(E)::QAB1(C),XP(e)
      • Refutation
        • S(b);
    • Try
      • Q(C);XP(e)
      • Threat
        • QAB(C)+R(E),DCHECK
      • Vars
        • B(f);OGATE,P_PINQ(C),P_SPINB(f),XR(E)::QAB1(C),XB(f)
        • B(f);N_GUARD,SBLOCK,XS(F)::QAB(C)+R(E)
        • B(h);::QAB(C)+R(E),DCHECK,XB(h)
      • Refutation
        • R(a);XP(A)
  • Actual
    • R(E);
    • Threat
      • S(F)
    • Vars
      • K(d);OGATEB,S_FLIGHT,XS(F)::B(J)
      • R(i);N_GUARD,XB(J)::QAR2(C),XB(f)
      • B(f);N_GUARD,SBLOCK,XS(F)::QAB(C),XP(e)
      • B(h);XR(E)::S(F),XB(h)
      • S(b);N_GUARD::QAB1(C)
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