MESON Chess Problem Database

Problem Display
PID: 1997 (7Q/2Rp4/2pN4/p2rp3/P2N4/B1k5/2PpRb2/3K2n1 w - - 0 1)

Abbott, Joseph William

2nd Prize Set, The Chess Monthly (Hoffer), 1881-1882

7Q/2Rp4/2pN4/p2rp3/P2N4/B1k5/2PpRb2/3K2n1

#2

9 + 9

3467 Chess Blossoms 1883
1253 Leeds Mercury Weekly Supplement 1883
3479 121 Chess Problems 1887
14789 Cheltenham Examiner 1892
15148 Sadier Collection 2014
15239 Valois Notebooks 2015

SOLUTION

  • SOUND
  • Sets
    • 1...Rb5
      • 2.S4xb5#
    • 1...Sxe2
      • 2.Sxe2#
    • 1...e4
      • 2.S4b5#
    • 1...c5
      • 2.S4b5#
  • Tries
    • 1.Re3+?
      • 1...Kxd4
        • 2.Rd3#
      • 1...Bxe3!
    • 1.Rxc6+?
      • 1...Kxd4
        • 2.Sf5#
        • 2.Bb2#
        • 2.Re4#
        • 2.Rc4#
      • 1...Rc5
        • 2.S4b5#
      • 1...dxc6!
    • 1.Qb8?
      • threat
        • 2.Bb2#
        • 2.Qb2#
      • 1...Kxd4
        • 2.Qb2#
      • 1...Rb5
        • 2.S4xb5#
      • 1...Rxd6!
  • Keys
    • 1.Rxe5!
      • 1...Kxd4
        • 2.Re4#
      • 1...Rxd4
        • 2.Rc5#
      • 1...Rxe5
        • 2.S4b5#
      • 1...Rxd6
        • 2.Rc5#
      • 1...Bxd4
        • 2.Re3#
      • 1...Rb5
        • 2.S4xb5#
      • 1...Rc5
        • 2.Rxc5#
      • 1...Be1
        • 2.Re3#
      • 1...Be3
        • 2.Rxe3#
      • 1...Bg3
        • 2.Re3#
      • 1...Bh4
        • 2.Re3#
      • 1...Se2
        • 2.Sxe2#
      • 1...Sf3
        • 2.Se2#
      • 1...Sh3
        • 2.Se2#
      • 1...c5
        • 2.S4b5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 12
    • REMOVED MATES = 1
  • Sets
    • R(f);N_GUARD::S(F),XR(f)
    • S(a);XR(C)::S(F),XS(a)
    • P(g);::QAB(I)+S(F),DCHECK
    • P(h);S_CUTR(f)::S(F)
  • Tries
    • Try
      • R(C);CHECK
      • Vars
        • K(d);N_SPINP(h),P_SPINP(g),S_FLIGHT,XS(F)::R1(C)
      • Refutation
        • B(c);XR(C)
    • Try
      • R(H);CHECK,XP(h)
      • Vars
        • R(f);P_SPINR(f)::S(F)
      • Refutation
        • P(i);XR(H)
    • Try
      • Q(I);
      • Threat
        • DUALS(2)
      • Vars
        • K(d);N_SPINP(h),S_FLIGHT,XS(F)::QAB(I)
        • R(f);N_GUARD::S(F),XR(f)
      • Refutation
        • R(f);XS(G)
  • Actual
    • R(C);XP(g)
    • Vars
      • K(d);N_SPINP(h),OGATEB,S_FLIGHT,XS(F)::QAB(I)+R(C),DCHECK
      • R(f);OGATE,XS(F)::R(C)
      • R(f);N_GUARD,XR(C)::S(F)
      • R(f);OGATE,XS(G)::R(C)
      • B(c);N_GUARD,XS(F)::R(C)
      • R(f);N_GUARD::S(F),XR(f)
      • R(f);N_SPINP(h),OGATE::R(C),XR(f)
      • B(c);N_GUARD::R(C)
      • B(c);N_GUARD::R(C),XB(c)
      • S(a);N_GUARD::S(F),XS(a)
      • S(a);N_GUARD::S(F)
      • P(h);S_CUTR(f)::S(F)
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