MESON Chess Problem Database

Problem Display
PID: 152707 (7r/2p1Q2n/1bp2pN1/p4pr1/3k1ppN/5P2/BPKP2p1/3R1n2 w - - 0 1)

Dawson, Thomas Rayner

British Chess Magazine, 1941

7r/2p1Q2n/1bp2pN1/p4pr1/3k1ppN/5P2/BPKP2p1/3R1n2

#2

9 + 14

15256 TRD Scrapbook 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Rxg6
      • 2.Sxf5#
    • 1...Sxd2
      • 2.Rxd2#
    • 1...Se3+
      • 2.dxe3#
    • 1...gxf3
      • 2.Sxf3#
    • 1...a4
      • 2.Qb4#
    • 1...c5
      • 2.Qd7#
  • Tries
    • 1.Sxf4?
      • threat
        • 2.Se2#
      • 1...Se3+
        • 2.Qxe3#
        • 2.dxe3#
      • 1...gxf3
        • 2.Sxf3#
      • 1...Sg3
        • 2.Qe3#
      • 1...g1S!
    • 1.Qa3?
      • threat
        • 2.Qc3#
      • 1...Se3+
        • 2.dxe3#
      • 1...gxf3!
  • Keys
    • 1.b4!
      • threat
        • 2.Qd7#
      • 1...Se3+
        • 2.dxe3#
      • 1...Rxg6
        • 2.Sxf5#
      • 1...Sxd2
        • 2.Rxd2#
      • 1...gxf3
        • 2.Sxf3#
      • 1...axb4
        • 2.Qxb4#
      • 1...Rd8
        • 2.Qxd8#
      • 1...Bc5
        • 2.Qxc5#
      • 1...Sf8
        • 2.Qxf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • R(h);N_GUARD,XS(H)::S(G),XP(g)
    • S(a);OGATE,P_SPINS(a),XP(E)::R(A),XS(a)
    • S(a);CHECK,OGATE::R(A)+P(E)DCHECK,XS(a)
    • P(e);XP(F)::S(G),XP(e)
    • P(f);N_GUARD::QAR2(I)
    • P(j);SBLOCK::QAR(I)
  • Tries
    • Try
      • S(H);XP(d)
      • Threat
        • S(H)
      • Vars
        • P(e);XP(F)::S(G),XP(e)
        • S(a);N_GUARD::QAB1(I)
      • Refutation
        • P(b);
    • Try
      • Q(I);
      • Threat
        • QAB1(I)
      • Vars
        • S(a);CHECK,OGATE::R(A)+P(E)DCHECK,XS(a)
      • Refutation
        • P(e);XP(F)
  • Actual
    • P(C);
    • Threat
      • QAR(I)
    • Vars
      • S(a);CHECK,OGATE::R(A)+P(E)DCHECK,XS(a)
      • R(h);N_GUARD,XS(H)::S(G),XP(g)
      • S(a);OGATE,P_SPINS(a),XP(E)::R(A),XS(a)
      • P(e);XP(F)::S(G),XP(e)
      • P(f);OGATE,XP(C)::QAR2(I),XP(f)
      • R(n);N_GUARD::QAR(I),XR(n)
      • B(i);N_GUARD::QAB1(I),XB(i)
      • S(m);N_GUARD::QAB(I),XP(k)
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