MESON Chess Problem Database

Problem Display
PID: 232272 (5Q1B/3P2NK/1N6/2prPB2/1P1kp1pR/2p4b/2P4b/2n2R2 w - - 0 1)

Heitzman, W

Pen & Pencil, 1889

(First published on Sat Sep 21 1889)

5Q1B/3P2NK/1N6/2prPB2/1P1kp1pR/2p4b/2P4b/2n2R2

#2

12 + 9

15239 Valois Notebooks 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kxe5
      • 2.Sh5#
      • 2.Se6#
      • 2.Se8#
    • 1...Rxd7
      • 2.Qxc5#
    • 1...e3
      • 2.Se6#
    • 1...g3
      • 2.Rxe4#
  • Tries
    • 1.Re1?
      • threat
        • 2.Se6#
        • 2.Rxe4#
      • 1...Kxe5
        • 2.Sh5#
        • 2.Se6#
        • 2.Rxe4#
      • 1...Rxe5
        • 2.Se6#
      • 1...Rxd7
        • 2.Rxe4#
        • 2.Qxc5#
      • 1...e3
        • 2.Se6#
      • 1...Rd6
        • 2.Rxe4#
        • 2.Qxd6#
      • 1...Bg2
        • 2.Se6#
      • 1...Se2!
    • 1.Rf3?
      • threat
        • 2.Se6#
      • 1...Kxe5
        • 2.Sh5#
        • 2.Se6#
        • 2.Se8#
      • 1...Rxd7
        • 2.Qxc5#
      • 1...gxf3
        • 2.Rxe4#
      • 1...Rd6
        • 2.Qxd6#
      • 1...exf3!
    • 1.Qxc5+?
      • 1...Kxe5
        • 2.Sh5#
        • 2.Se6#
        • 2.Se8#
      • 1...Rxc5!
  • Keys
    • 1.Bg6!
      • threat
        • 2.Sf5#
      • 1...Ke3
        • 2.Qf2#
      • 1...Kxe5
        • 2.Qf6#
      • 1...Rxd7
        • 2.Qxc5#
      • 1...e3
        • 2.Se6#
      • 1...g3
        • 2.Rxe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • R(i);N_GUARD,P_PINS(I),XP(H)::QAB1(K),XP(h)
    • P(f);P_SPINP(g),SBLOCK::S(I)
    • P(g);OGATE,P_SPINP(f)::R1(D),XP(f)
  • Tries
    • Try
      • R(A);
      • Threat
        • DUALS(2)
      • Vars
        • R(i);XP(E)::S(I)
        • P(f);P_SPINP(g)::S(I)
        • B(d);::S(I)
      • Refutation
        • S(a);
    • Try
      • R(A);
      • Threat
        • S(I)
      • Vars
        • R(i);N_GUARD,P_PINS(I),XP(H)::QAB1(K),XP(h)
        • P(g);OGATE,P_SPINP(f),XR(A)::R1(D),XP(f)
        • R(i);OGATEB::QAR2(K),XR(i)
      • Refutation
        • P(f);P_SPINP(g),XR(A)
    • Try
      • Q(K);CHECK,XP(h)
      • Refutation
        • R(i);XQ(K)
  • Actual
    • B(F);
    • Threat
      • S(I)
    • Vars
      • K(e);S_FLIGHT::QAB1(K)
      • K(e);OGATEB,S_FLIGHT,XP(E)::QAB1(K)
      • R(i);N_GUARD,P_PINS(I),XP(H)::QAB1(K),XP(h)
      • P(f);P_SPINP(g),SBLOCK::S(I)
      • P(g);OGATE,P_SPINP(f)::R1(D),XP(f)
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