MESON Chess Problem Database

Problem Display
PID: 151519 (2b1RqN1/4pn2/2p3Qp/1P1R1p1K/4k3/4pp2/B3p2B/b1N5 w - - 0 1)

Dawson, Thomas Rayner

British Chess Magazine, 1934

2b1RqN1/4pn2/2p3Qp/1P1R1p1K/4k3/4pp2/B3p2B/b1N5

#2

9 + 12

15256 TRD Scrapbook 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Bf6
      • 2.Sxf6#
    • 1...Ba6
      • 2.Qxf5#
    • 1...Bb7
      • 2.Qxf5#
    • 1...f2
      • 2.Qg2#
    • 1...e5
      • 2.Sf6#
    • 1...e6
      • 2.Qxf5#
  • Tries
    • 1.Rd4+?
      • 1...Bxd4
        • 2.Qxc6#
      • 1...Kxd4!
    • 1.Qg3?
      • threat
        • 2.Qf4#
      • 1...f4
        • 2.Qxf4#
      • 1...Be5!
    • 1.Qg4+?
      • 1...f4
        • 2.Qxf4#
      • 1...fxg4!
    • 1.Qxc6?
      • threat
        • 2.Bb1#
        • 2.Rd1#
        • 2.Rd2#
        • 2.Rd3#
        • 2.Rd6#
        • 2.Rd7#
        • 2.Rdd8#
        • 2.Qc2#
      • 1...Qxe8
        • 2.Bb1#
        • 2.Rd7#
        • 2.Qc2#
      • 1...f2
        • 2.Rd1#
        • 2.Rd2#
        • 2.Rd3#
        • 2.Rd6#
        • 2.Rd7#
        • 2.Rdd8#
      • 1...e1S
        • 2.Rd1#
        • 2.Rd2#
        • 2.Rd3#
        • 2.Rd6#
        • 2.Rd7#
        • 2.Rdd8#
      • 1...Bc3
        • 2.Bb1#
        • 2.Rd1#
        • 2.Rd2#
        • 2.Rd3#
        • 2.Rd6#
        • 2.Rd7#
        • 2.Rdd8#
      • 1...Bd4
        • 2.Bb1#
        • 2.Rc5#
        • 2.Re5#
        • 2.Rd6#
        • 2.Rd7#
        • 2.Rdd8#
        • 2.Qc2#
      • 1...Be6
        • 2.Bb1#
        • 2.Qc2#
      • 1...Bb7
        • 2.Bb1#
        • 2.Qc2#
      • 1...Bd7
        • 2.Bb1#
        • 2.Rxd7#
        • 2.Qc2#
      • 1...Sd6
        • 2.Bb1#
        • 2.Rd1#
        • 2.Rd2#
        • 2.Rd3#
        • 2.Rxd6#
        • 2.Qc2#
      • 1...Sd8
        • 2.Bb1#
        • 2.Rdxd8#
        • 2.Qc2#
      • 1...f4
        • 2.Bb1#
        • 2.Qc2#
      • 1...Se5!
    • 1.Qe6+?
      • 1...Be5
        • 2.Bb1#
      • 1...Se5
        • 2.Bb1#
      • 1...Bxe6!
  • Keys
    • 1.Sb3!
      • threat
        • 2.Sc5#
      • 1...Kxd5
        • 2.Qxc6#
      • 1...cxd5
        • 2.Bb1#
      • 1...Bd4
        • 2.Rxd4#
      • 1...f2
        • 2.Qg2#
      • 1...c5
        • 2.Sxc5#
      • 1...e5
        • 2.Sf6#
      • 1...e6
        • 2.Qxf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 3
  • Sets
    • B(a);N_GUARD::S(I),XB(a)
    • B(k);N_GUARD::QAB1(G),XP(f)
    • P(d);OGATEB::QAB(G)
    • P(i);N_SPINP(f),P_SPINP(i),S_CUTB(a)::S(I)
    • P(i);S_CUTB(k)::QAB1(G),XP(f)
  • Tries
    • Try
      • R(E);CHECK
      • Vars
        • B(a);SBLOCK,XR(E)::QAB(G),XP(g)
      • Refutation
        • K(e);N_SPINP(f),P-FLIGHT,XR(E)
    • Try
      • Q(G);N_PINP(f),P_PINP(i)
      • Threat
        • QAR1(G)
      • Vars
        • P(f);::QAR1(G),XP(f)
      • Refutation
        • B(a);N_SPINP(i)
    • Try
      • Q(G);CHECK,N_PINP(f),P_PINP(i)
      • Vars
        • P(f);N_SPINP(i),P_SPINP(f)::QAR1(G),XP(f)
      • Refutation
        • P(f);XQ(G)
    • Try
      • Q(G);N_PINP(f),P_PINP(i),XP(g)
      • Threat
        • DUALS(8)
      • Refutation
        • S(j);N_SPINP(i)
    • Try
      • Q(G);CHECK,N_PINP(f)
      • Vars
        • B(a);P_SPINB(a)::B(B)
        • S(j);P_SPINS(j)::B(B)
      • Refutation
        • B(k);XQ(G)
  • Actual
    • S(A);
    • Threat
      • S(A)
    • Vars
      • K(e);N_SPINP(f),OGATEB,S_FLIGHT,XR(E)::QAB1(G),XP(g)
      • P(g);SBLOCK,XR(E)::B(B)
      • B(a);N_GUARD::R1(E),XB(a)
      • P(d);OGATEB::QAB(G)
      • P(g);::S(A),XP(g)
      • P(i);N_SPINP(f),P_SPINP(i),S_CUTB(a)::S(I)
      • P(i);S_CUTB(k)::QAB1(G),XP(f)
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