MESON Chess Problem Database

Problem Display
PID: 18537 (2b5/2p1Q3/4p3/1n1Bk2K/1P1R1R2/5P2/3q3b/4r3 w - - 0 1)

Mansfield, Comins

Problem (Zagreb), 1956

2b5/2p1Q3/4p3/1n1Bk2K/1P1R1R2/5P2/3q3b/4r3

#2

7 + 8

3550 Complete Mansfield/II 1997

SOLUTION

  • SOUND
  • Sets
    • 1...Ba6
      • 2.Qxe6#
    • 1...Bb7
      • 2.Qxe6#
    • 1...Sa3
      • 2.Qxc7#
    • 1...Sc3
      • 2.Qxc7#
    • 1...Sd6
      • 2.Qf6#
      • 2.Qg7#
    • 1...Sa7
      • 2.Qxc7#
  • Tries
    • 1.Rde4+?
      • 1...Kxd5
        • 2.Qc5#
      • 1...Rxe4!
    • 1.Rfe4+?
      • 1...Kf5
        • 2.Qf8#
        • 2.Qf7#
      • 1...Rxe4!
    • 1.Qxc7+?
      • 1...Sd6
        • 2.Qg7#
      • 1...Sxc7!
  • Keys
    • 1.Be4!
      • threat
        • 2.Qf6#
      • 1...Kxd4
        • 2.Qc5#
      • 1...Kxf4
        • 2.Qg5#
      • 1...Qxf4
        • 2.Rd5#
      • 1...Qxd4
        • 2.Rf5#
      • 1...Bxf4
        • 2.Qg7#
      • 1...Sxd4
        • 2.Qxc7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 5
  • Sets
    • B(h);N_GUARD::QAR1(G),XP(f)
    • S(d);N_GUARD::QAB(G),XP(g)
  • Tries
    • Try
      • R(C);CHECK
      • Vars
        • K(e);N_SPINP(f),P-FLIGHT,XB(E)::QAR1(G)
      • Refutation
        • R(a);XR(C)
    • Try
      • R(D);CHECK
      • Refutation
        • R(a);XR(D)
    • Try
      • Q(G);CHECK,N_PINP(f),XP(g)
      • Vars
        • S(d);P_SPINS(d),SBLOCK::QAB(G)
      • Refutation
        • S(d);XQ(G)
  • Actual
    • B(E);
    • Threat
      • QAB1(G)
    • Vars
      • K(e);N_SPINP(f),S_FLIGHT,XR(C)::QAB1(G)
      • K(e);N_SPINP(f),S_FLIGHT,XR(D)::QAB1(G)
      • Q(b);N_GUARD,SBLOCK,XR(D)::R1(C)
      • Q(b);SBLOCK,XR(C)::R1(D)
      • B(c);SBLOCK,XR(D)::QAB(G)
      • S(d);N_GUARD,SBLOCK,XR(C)::QAB(G),XP(g)
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