MESON Chess Problem Database

Problem Display
PID: 230116 (7B/1Np1p3/1p3Np1/1R1n2P1/r2k2KR/3P2b1/b2P1P2/1B4n1 w - - 0 1)

Gray, Henry

Southend Times, 1937

(First published on Wed Jun 23 1937)

7B/1Np1p3/1p3Np1/1R1n2P1/r2k2KR/3P2b1/b2P1P2/1B4n1

#2

11 + 10

15239 Valois Notebooks 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rc4
      • 2.Rxd5#
    • 1...Bxb1
      • 2.Rxd5#
    • 1...Se3+
      • 2.fxe3#
    • 1...Sb4
      • 2.Kxg3#
    • 1...Sxf6+
      • 2.Kxg3#
  • Tries
    • 1.Kxg3+?
      • 1...Sf4
        • 2.Rxf4#
      • 1...Ke5!
    • 1.Sxd5+?
      • 1...e5
        • 2.Kxg3#
      • 1...Be5!
    • 1.Sd7+?
      • 1...Be5
        • 2.Bxe5#
      • 1...Sf6+
        • 2.Kxg3#
      • 1...e5!
  • Keys
    • 1.Sd8!
      • threat
        • 2.Sc6#
      • 1...Ke5+
        • 2.Se4#
      • 1...Se3+
        • 2.fxe3#
      • 1...Sxf6+
        • 2.Kxg3#
      • 1...Bxb1
        • 2.Rxd5#
      • 1...Rc4
        • 2.Rxd5#
      • 1...Sb4
        • 2.Kxg3#
      • 1...c6
        • 2.Sxc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • R(d);S_CUTB(b)::R1(G),XS(f)
    • B(b);N_GUARD,XB(A)::R1(G),XS(f)
    • S(f);CHECK,OGATE::P(C),XS(f)
    • S(f);N_GUARD::R(F)+K(E),XB(c)
    • S(f);CHECK,N_GUARD,P_SPINS(f),XS(I)::R(F)+K(E),XB(c)
  • Tries
    • Try
      • K(E);CHECK,P-FLIGHT,XB(c)
      • Vars
        • S(f);N_GUARD,P_SPINS(f)::R(F),XS(f)
      • Refutation
        • K(e);P_SPINS(f),S_FLIGHT
    • Try
      • S(I);CHECK,XS(f)
      • Vars
        • P(j);P_SPINP(j)::R(F)+K(E),XB(c)
      • Refutation
        • B(c);P_SPINB(c)
    • Try
      • S(I);CHECK
      • Vars
        • B(c);N_GUARD,P_SPINB(c)::B(K),XB(c)
        • S(f);CHECK,P_SPINS(f)::R(F)+K(E),XB(c)
      • Refutation
        • P(j);P_SPINP(j)
  • Actual
    • S(J);
    • Threat
      • S(J)
    • Vars
      • K(e);CHECK,P_SPINS(f),S_FLIGHT::B(K)+S(I)
      • S(f);CHECK,OGATE::P(C),XS(f)
      • S(f);CHECK,N_GUARD,P_SPINS(f),XS(I)::R(F)+K(E),XB(c)
      • B(b);N_GUARD,XB(A)::R1(G),XS(f)
      • R(d);S_CUTB(b)::R1(G),XS(f)
      • S(f);N_GUARD::R(F)+K(E),XB(c)
      • P(i);::S(J),XP(i)
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