MESON Chess Problem Database

Problem Display
PID: 18050 (8/3r1RPP/1p2k3/1P1RNr2/4Np2/5B2/4Q3/1K6 w - - 0 1)

Mansfield, Comins

HM., American Chess Bulletin, 1953

8/3r1RPP/1p2k3/1P1RNr2/4Np2/5B2/4Q3/1K6

#2

10 + 5

3174 The Two-move Chess Problem Tradition and Development 1966
3550 Complete Mansfield/II 1997
5454 Near Snap 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Rxe5
      • 2.Sg5#
    • 1...Rg5
      • 2.Sxg5#
  • Tries
    • 1.Sg6?
      • threat
        • 2.Sg5#
      • 1...Kxf7
        • 2.g8Q#
      • 1...Rfxd5
        • 2.Rf6#
      • 1...Rfxf7
        • 2.Re5#
      • 1...Rdxd5
        • 2.Re7#
      • 1...Rdxf7
        • 2.Rd6#
      • 1...Rg5
        • 2.Sxg5#
      • 1...Kxd5!
    • 1.Rd6+?
      • 1...Kxe5
        • 2.Qb2#
      • 1...Rxd6!
  • Keys
    • 1.Sc6!
      • threat
        • 2.Sg5#
      • 1...Kxd5
        • 2.Qa2#
      • 1...Kxf7
        • 2.g8Q#
      • 1...Rfxd5
        • 2.Rf6#
      • 1...Rfxf7
        • 2.Re5#
      • 1...Rdxd5
        • 2.Re7#
      • 1...Rdxf7
        • 2.Rd6#
      • 1...Rg5
        • 2.Sxg5#

Anticipated by 175150(1902)

There are these versions: 18185

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 1
  • Sets
    • R(b);N_GUARD,XS(G)::S(D)
    • R(b);N_GUARD::S(D),XR(b)
  • Tries
    • Try
      • S(G);
      • Threat
        • QAR(B)+S(D),DCHECK
      • Vars
        • K(d);S_FLIGHT,XR(H)::P=Q
        • R(b);N_GUARD,SBLOCK,XR(F)::R1(H)
        • R(b);N_GUARD,SBLOCK,XR(H)::R1(F)
        • R(e);N_GUARD,SBLOCK,XR(F)::R1(H)
        • R(e);N_GUARD,SBLOCK,XR(H)::R1(F)
        • R(b);::QAR(B)+S(D),DCHECK,XR(b)
      • Refutation
        • K(d);S_FLIGHT,XR(F)
    • Try
      • R(F);CHECK
      • Vars
        • K(d);P-FLIGHT,XS(G)::QAB(B)
      • Refutation
        • R(e);XR(F)
  • Actual
    • S(G);
    • Threat
      • QAR(B)+S(D),DCHECK
    • Vars
      • K(d);OGATEB,S_FLIGHT,XR(F)::QAB(B)
      • K(d);S_FLIGHT,XR(H)::P=Q
      • R(b);N_GUARD,SBLOCK,XR(F)::R1(H)
      • R(b);N_GUARD,SBLOCK,XR(H)::R1(F)
      • R(e);N_GUARD,SBLOCK,XR(F)::R1(H)
      • R(e);N_GUARD,SBLOCK,XR(H)::R1(F)
      • R(b);::QAR(B)+S(D),DCHECK,XR(b)
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