MESON Chess Problem Database

Problem Display
PID: 21062 (R4b2/3p4/8/qN1Q1K2/k2p4/1n1n1p2/2N5/1r6 w - - 0 1)

Heathcote, Godfrey

L'Eco degli Scacchi, 1916

R4b2/3p4/8/qN1Q1K2/k2p4/1n1n1p2/2N5/1r6

#2

5 + 9

3360 Simple Two-move Themes 1924
17121 Encyclopedia of Chess Problems (Velimirovic/Valtonen) 2012
5454 Near Snap 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Sc5
      • 2.Qc4#
  • Tries
    • 1.Sbxd4?
      • threat
        • 2.Qb5#
      • 1...Bc5
        • 2.Qxd7#
      • 1...Sa1
        • 2.Rxa5#
        • 2.Qxa5#
      • 1...Sbc1
        • 2.Rxa5#
        • 2.Qxa5#
      • 1...Sd2
        • 2.Rxa5#
        • 2.Qxa5#
      • 1...Sbc5
        • 2.Qa2#
      • 1...Sdc5
        • 2.Qc4#
      • 1...Sxd4+!
    • 1.Sd6?
      • threat
        • 2.Qb5#
      • 1...Sa1
        • 2.Rxa5#
      • 1...Sbc1
        • 2.Rxa5#
      • 1...Sd2
        • 2.Rxa5#
      • 1...Sbc5
        • 2.Qa2#
      • 1...Sdc5
        • 2.Qc4#
      • 1...Bxd6!
  • Keys
    • 1.Sc7!
      • threat
        • 2.Qb5#
      • 1...Bc5
        • 2.Qxd7#
      • 1...Sa1
        • 2.Rxa5#
      • 1...Sbc1
        • 2.Rxa5#
      • 1...Sd2
        • 2.Rxa5#
      • 1...Sbc5
        • 2.Qa2#
      • 1...Sdc5
        • 2.Qc4#

This anticipates 185082(1930)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • S(c);N_GUARD,S_CUTB(i)::QAR2(C)
  • Tries
    • Try
      • S(B);P_SPINQ(C),XP(f)
      • Threat
        • QAB1(C)
      • Vars
        • B(i);N_PINQ(C)::QAB(C),XP(h)
        • S(b);N_PINQ(C)::QAR2(C)
        • S(c);N_PINQ(C)::QAR2(C)
      • Refutation
        • S(b);CHECK,XS(B)
    • Try
      • S(B);P_SPINQ(C)
      • Threat
        • QAB1(C)
      • Vars
        • S(b);N_GUARD::R1(E),XQ(g)
        • S(b);N_PINQ(C)::QAR2(C)
        • S(c);N_PINQ(C)::QAR2(C)
      • Refutation
        • B(i);XS(B)
  • Actual
    • S(B);P_SPINQ(C)
    • Threat
      • QAB1(C)
    • Vars
      • B(i);N_PINQ(C)::QAB(C),XP(h)
      • S(b);N_GUARD::R1(E),XQ(g)
      • S(b);N_PINQ(C)::QAR2(C)
      • S(c);N_PINQ(C)::QAR2(C)
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