MESON Chess Problem Database

Problem Display
PID: 18040 (B7/8/2n1r3/2BN1Q2/K1kP4/2P1p3/8/8 w - - 0 1)

Richenberg, LJ

Time & Tide, 1952

B7/8/2n1r3/2BN1Q2/K1kP4/2P1p3/8/8

#2

7 + 4

SOLUTION

  • SOUND
  • Tries
    • 1.Sxe3+?
      • 1...Kxc3
        • 2.Qc2#
      • 1...Rxe3!
    • 1.Qd3+?
      • 1...Kxd5
        • 2.c4#
      • 1...Kxd3!
  • Keys
    • 1.Qc2!
      • threat
        • 2.Sb6#
      • 1...Kxd5
        • 2.c4#
      • 1...Sxd4
        • 2.cxd4#
      • 1...Sb4
        • 2.cxb4#
      • 1...Sa5
        • 2.Qe2#
      • 1...Se5
        • 2.Sxe3#
      • 1...Sa7
        • 2.Qe2#
      • 1...Se7
        • 2.Qe2#
      • 1...Sb8
        • 2.Qe2#
      • 1...Sd8
        • 2.Qe2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(E);CHECK,XP(a)
      • Vars
        • K(b);P-FLIGHT,XP(A)::QAR1(F)
      • Refutation
        • R(d);XS(E)
    • Try
      • Q(F);CHECK
      • Vars
        • K(b);OGATE,P_SPINS(c),S_FLIGHT,XS(E)::P(A)
      • Refutation
        • K(b);S_FLIGHT,XQ(F)
  • Actual
    • Q(F);
    • Threat
      • S(E)
    • Vars
      • K(b);OGATE,P_SPINS(c),S_FLIGHT,XS(E)::P(A)
      • S(c);OGATE,XP(C)::QAR(F)+P(A),XS(c)
      • S(c);OGATE::QAR(F)+P(A),XS(c)
      • S(c);::QAB(F)
      • S(c);S_CUTR(d)::S(E),XP(a)
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