MESON Chess Problem Database

Problem Display
PID: 63179 (2R1K3/3p2P1/Bb1pp1N1/2pkPp2/2R5/r5N1/3n2n1/1Q6 w - - 0 1)

Banny, Dimitry Nikolaevich

3rd Comm., Hlas l'udu, 1984

2R1K3/3p2P1/Bb1pp1N1/2pkPp2/2R5/r5N1/3n2n1/1Q6

#2

9 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Ra1
      • 2.Qd3#
    • 1...Ra2
      • 2.Qd3#
    • 1...Rd3
      • 2.Qxd3#
    • 1...Ra4
      • 2.Qd3#
    • 1...Ra5
      • 2.Qd3#
    • 1...Rxa6
      • 2.Qd3#
    • 1...Ba5
      • 2.Qb7#
    • 1...Ba7
      • 2.Qb7#
    • 1...Bc7
      • 2.Qb7#
    • 1...Bd8
      • 2.Qb7#
  • Tries
    • 1.Rd4+?
      • 1...cxd4
        • 2.Bb7#
      • 1...Kxd4!
    • 1.R8xc5+?
      • 1...Bxc5
        • 2.Qb7#
      • 1...dxc5!
    • 1.Qxf5?
      • threat
        • 2.Se7#
      • 1...Rxa6
        • 2.Qd3#
      • 1...Sxc4
        • 2.Qe4#
      • 1...dxe5
        • 2.Qxe5#
      • 1...exf5
        • 2.g8Q#
        • 2.g8B#
      • 1...Bd8!
    • 1.Qb5?
      • threat
        • 2.Bb7#
      • 1...Sxc4
        • 2.Qxc4#
      • 1...dxe5
        • 2.Qxd7#
      • 1...Rxa6!
  • Keys
    • 1.Sxf5!
      • threat
        • 2.Sfe7#
      • 1...Rxa6
        • 2.Qd3#
      • 1...Sxc4
        • 2.Bb7#
      • 1...dxe5
        • 2.Sge7#
      • 1...exf5
        • 2.g8Q#
        • 2.g8B#
      • 1...Bd8
        • 2.Qb7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 8
  • Sets
    • R(c);N_GUARD::QAR2(A)
    • R(c);N_GUARD::QAR2(A),XR(c)
    • R(c);N_GUARD,XB(E)::QAR2(A)
    • B(g);OGATE::QAB(A)
  • Tries
    • Try
      • R(C);CHECK
      • Vars
        • P(d);SBLOCK,XR(C)::B(E)
      • Refutation
        • K(e);P-FLIGHT,XR(C)
    • Try
      • R(H);CHECK,XP(d)
      • Vars
        • B(g);OGATE,XR(H)::QAB(A)
      • Refutation
        • P(h);XR(H)
    • Try
      • Q(A);XP(f)
      • Threat
        • S(F)
      • Vars
        • R(c);N_GUARD,XB(E)::QAR2(A)
        • S(a);N_GUARD,XR(C)::QAB1(A)
        • P(h);OGATE,P_SPINP(h),XP(D)::QAR1(A),XP(h)
        • P(i);XQ(A)::P=Q
      • Refutation
        • B(g);
    • Try
      • Q(A);P_PINP(d)
      • Threat
        • B(E)
      • Vars
        • S(a);OGATE,XR(C)::QAB1(A),XS(a)
        • P(h);OGATEB,XP(D)::QAR2(A),XP(j)
      • Refutation
        • R(c);XB(E)
  • Actual
    • S(B);XP(f)
    • Threat
      • S(B)
    • Vars
      • R(c);N_GUARD,XB(E)::QAR2(A)
      • S(a);SBLOCK,XR(C)::B(E)
      • P(h);SBLOCK,XP(D)::S(F)
      • P(i);XS(B)::P=Q
      • B(g);OGATE::QAB(A)
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