MESON Chess Problem Database

Problem Display
PID: 274687 (r6B/7R/1N2rn2/1P1p4/b7/2k1pn2/P1N1P2b/1RK3Q1 w - - 0 1)

Briais, Alexis-Adrien

Western Morning News, 1925

(First published on Sat Jun 6 1925)

r6B/7R/1N2rn2/1P1p4/b7/2k1pn2/P1N1P2b/1RK3Q1

#2

10 + 9

15239 Valois Notebooks 2024

SOLUTION

  • SOUND
  • Sets
    • 1...Re5
      • 2.Rc7#
    • 1...Rc6
      • 2.Qxe3#
    • 1...Rd6
      • 2.Qxe3#
    • 1...Be5
      • 2.Qxe3#
    • 1...Bb3
      • 2.Rxb3#
    • 1...Bxb5
      • 2.Rb3#
    • 1...Se1
      • 2.Qxe1#
    • 1...Sd4
      • 2.Qe1#
    • 1...Sh4
      • 2.Qe1#
    • 1...Se5
      • 2.Qe1#
    • 1...Sg5
      • 2.Qe1#
  • Tries
    • 1.Sxa4+?
      • 1...Kc4
        • 2.Rb4#
      • 1...Rxa4!
    • 1.Bxf6+?
      • 1...Re5
        • 2.Rc7#
        • 2.Qxe3#
      • 1...Rxf6
        • 2.Qxe3#
      • 1...Be5
        • 2.Qxe3#
      • 1...Sd4
        • 2.Bxd4#
        • 2.Qe1#
      • 1...Se5
        • 2.Qxe3#
        • 2.Qe1#
      • 1...d4!
    • 1.Rc7+?
      • 1...Rc6
        • 2.Rxc6#
        • 2.Qxe3#
      • 1...Bxc7!
  • Keys
    • 1.Rb4!
      • threat
        • 2.Sxd5#
      • 1...Rxb6
        • 2.Qxe3#
      • 1...Rxh8
        • 2.Sxa4#
      • 1...Re5
        • 2.Rc7#
      • 1...Rd6
        • 2.Qxe3#
      • 1...Rd8
        • 2.Sxa4#
      • 1...Be5
        • 2.Qxe3#
      • 1...Bb3
        • 2.Rxb3#
      • 1...Sd4
        • 2.Qe1#
      • 1...Se5
        • 2.Qe1#
      • 1...d4
        • 2.Rc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 5
  • Sets
    • R(g);N_GUARD,N_SPINS(h),S_CUTB(a)::R(I)
    • R(g);N_GUARD::QAR2(C),XP(c)
    • B(a);N_SPINS(h),S_CUTR(g)::QAR2(C),XP(c)
    • B(e);N_GUARD::R1(A),XB(e)
    • B(e);N_GUARD,XP(G)::R1(A)
    • S(d);N_GUARD::QAB(C),XS(d)
    • S(d);N_GUARD,N_SPINS(h)::QAB(C)
    • S(d);N_GUARD::QAB(C)
  • Tries
    • Try
      • S(H);CHECK,XB(e)
      • Vars
        • K(b);N_SPINS(h),P-FLIGHT,S_CUTR(i)::R1(A)
      • Refutation
        • R(i);XS(H)
    • Try
      • B(J);CHECK,XS(h)
      • Vars
        • R(g);XB(J)::QAR2(C),XP(c)
        • B(a);P_SPINB(a)::QAR2(C),XP(c)
      • Refutation
        • P(f);P_SPINP(f)
    • Try
      • R(I);CHECK
      • Refutation
        • B(a);XR(I)
  • Actual
    • R(A);
    • Threat
      • S(H),XP(f)
    • Vars
      • R(g);N_GUARD,XS(H)::QAR2(C),XP(c)
      • R(i);N_GUARD,N_SPINS(h),XB(J)::S(H),XB(e)
      • R(g);N_GUARD,N_SPINS(h),S_CUTB(a)::R(I)
      • R(g);N_GUARD::QAR2(C),XP(c)
      • R(i);N_GUARD::S(H),XB(e)
      • B(a);N_SPINS(h),S_CUTR(g)::QAR2(C),XP(c)
      • B(e);N_GUARD::R1(A),XB(e)
      • S(d);N_GUARD,N_SPINS(h)::QAB(C)
      • P(f);N_GUARD,N_SPINS(h)::R1(A)
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