MESON Chess Problem Database

Problem Display
PID: 10343 (bbKN4/p3Qp2/3R4/2k1p3/1pp1r2r/2N4n/8/8 w - - 0 1)

Strydom, Jan

Comm., South African Chess Player, 1963

bbKN4/p3Qp2/3R4/2k1p3/1pp1r2r/2N4n/8/8

#2

5 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Rd4
      • 2.Rc6#
    • 1...Bb7+
      • 2.Sxb7#
    • 1...Bxd6
      • 2.Qxa7#
    • 1...f5
      • 2.Se6#
    • 1...f6
      • 2.Se6#
  • Tries
    • 1.Rd1+?
      • 1...Bd6
        • 2.Qxd6#
        • 2.Qxa7#
      • 1...Kb6!
    • 1.Rd2+?
      • 1...Bd6
        • 2.Qxd6#
        • 2.Qxa7#
      • 1...Kb6!
    • 1.Rd3+?
      • 1...Bd6
        • 2.Qxd6#
        • 2.Qxa7#
      • 1...Kb6!
    • 1.Ra6+?
      • 1...Bd6
        • 2.Qxd6#
        • 2.Qxa7#
      • 1...Kd4!
    • 1.Re6+?
      • 1...Bd6
        • 2.Qxd6#
        • 2.Qxa7#
      • 1...Kd4!
    • 1.Rf6+?
      • 1...Bd6
        • 2.Qxd6#
        • 2.Qxa7#
      • 1...Kd4!
    • 1.Rg6+?
      • 1...Bd6
        • 2.Qxd6#
        • 2.Qxa7#
      • 1...Kd4!
    • 1.Rh6+?
      • 1...Bd6
        • 2.Qxd6#
        • 2.Qxa7#
      • 1...Kd4!
    • 1.Rd7+?
      • 1...Bd6
        • 2.Qxd6#
      • 1...Kb6!
    • 1.Qxe5+?
      • 1...Bd5
        • 2.Sb7#
        • 2.Rc6#
        • 2.Qxd5#
      • 1...Rxe5!
    • 1.Qc7+?
      • 1...Bc6
        • 2.Sb7#
        • 2.Rd5#
        • 2.Qxc6#
      • 1...Bxc7!
  • Keys
    • 1.Qb7!
      • threat
        • 2.Rd5#
      • 1...Bxb7+
        • 2.Sxb7#
      • 1...Kxd6
        • 2.Qxb4#
      • 1...Bxd6
        • 2.Qxa7#
      • 1...Rd4
        • 2.Rc6#
      • 1...Sf4
        • 2.Sxe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • R(d);SBLOCK::QAB(C)+R(B),DCHECK
    • B(j);CHECK,N_GUARD::S(E),XB(j)
    • B(k);N_GUARD,P_SPINB(k),SBLOCK,XR(B)::QAB(C),XP(h)
    • P(i);N_GUARD::S(E)
  • Tries
    • Try
      • R(B);CHECK
      • Refutation
        • K(f);S_FLIGHT
    • Try
      • R(B);CHECK
      • Refutation
        • K(f);S_FLIGHT
    • Try
      • R(B);CHECK
      • Refutation
        • K(f);S_FLIGHT
    • Try
      • R(B);CHECK
      • Refutation
        • K(f);S_FLIGHT
    • Try
      • R(B);CHECK
      • Refutation
        • K(f);S_FLIGHT
    • Try
      • R(B);CHECK
      • Refutation
        • K(f);S_FLIGHT
    • Try
      • R(B);CHECK
      • Refutation
        • K(f);S_FLIGHT
    • Try
      • R(B);CHECK
      • Refutation
        • K(f);S_FLIGHT
    • Try
      • R(B);CHECK
      • Vars
        • B(k);N_GUARD,P_SPINB(k)::QAB1(C),XB(k)
      • Refutation
        • K(f);S_FLIGHT
    • Try
      • Q(C);CHECK,XP(g)
      • Refutation
        • R(d);XQ(C)
    • Try
      • Q(C);CHECK
      • Refutation
        • B(k);XQ(C)
  • Actual
    • Q(C);
    • Threat
      • R1(B)
    • Vars
      • B(j);CHECK,XQ(C)::S(E),XB(j)
      • K(f);S_FLIGHT,XR(B)::QAB(C),XP(b)
      • B(k);N_GUARD,SBLOCK,XR(B)::QAB(C),XP(h)
      • R(d);SBLOCK::R1(B)
      • S(a);S_CUTR(e)::S(A),XR(d)
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