MESON Chess Problem Database

Problem Display
PID: 225093 (3Q4/K2N1B2/3p4/2Rr4/3kn1P1/5b2/1PPrR1N1/8 w - - 0 1)

Slater, George James

Leeds Mercury Weekly Supplement, 1882

(First published on Sat Sep 9 1882)

3Q4/K2N1B2/3p4/2Rr4/3kn1P1/5b2/1PPrR1N1/8

#2

10 + 6

15239 Valois Notebooks 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Re5
      • 2.Rc4#
    • 1...Rf5
      • 2.Rc4#
    • 1...Rg5
      • 2.Rc4#
    • 1...Rh5
      • 2.Rc4#
    • 1...Sc3
      • 2.bxc3#
  • Tries
    • 1.Qf6+?
      • 1...Re5
        • 2.Rc4#
      • 1...Sxf6!
    • 1.Qh8+?
      • 1...Re5
        • 2.Rc4#
      • 1...Sf6!
  • Keys
    • 1.Se5!
      • threat
        • 2.Rxd5#
      • 1...Kxc5
        • 2.Qb6#
      • 1...Kxe5
        • 2.Qh8#
      • 1...Rxc5
        • 2.Sxf3#
      • 1...Rxe5
        • 2.Rc4#
      • 1...Sxc5
        • 2.c3#
      • 1...dxc5
        • 2.Qxd5#
      • 1...dxe5
        • 2.Qxd5#
      • 1...Sf2
        • 2.Rc4#
      • 1...Sc3
        • 2.Rc4#
      • 1...Sg3
        • 2.Rc4#
      • 1...Sg5
        • 2.Rc4#
      • 1...Sf6
        • 2.Rc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 10
    • REMOVED MATES = 3
  • Sets
    • R(e);::R1(F)
    • S(d);OGATE::P(A),XS(d)
  • Tries
    • Try
      • Q(J);CHECK
      • Vars
        • R(e);P_SPINR(e)::R1(F)
      • Refutation
        • S(d);XQ(J)
    • Try
      • Q(J);CHECK
      • Vars
        • R(e);P_SPINR(e)::R1(F)
      • Refutation
        • S(d);P_SPINS(d)
  • Actual
    • S(H);
    • Threat
      • R1(F),XR(e)
    • Vars
      • K(c);OGATEB,S_FLIGHT,XR(F)::QAB1(J)
      • K(c);OGATEB,P_SPINR(e),P_SPINS(d),S_FLIGHT,XS(H)::QAB(J)
      • R(e);P_SPINP(f),SBLOCK,XR(F)::S(H),XB(b)
      • R(e);P_SPINP(f),SBLOCK,XS(H)::R1(F)
      • S(d);N_GUARD,SBLOCK,XR(F)::P(B)
      • P(f);OGATE,P_SPINR(e),XR(F)::QAR1(J),XR(e)
      • P(f);OGATE,P_SPINR(e),XS(H)::QAR1(J),XR(e)
      • S(d);::R1(F)
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