MESON Chess Problem Database

Problem Display
PID: 18576 (1nr4n/6Q1/b7/6R1/B1k5/1p1r1p2/4NK2/4B3 w - - 0 1)

Mansfield, Comins

The Tablet, 1956

(First published on Sat Sep 15 1956)

1nr4n/6Q1/b7/6R1/B1k5/1p1r1p2/4NK2/4B3

#2

6 + 8

3550 Complete Mansfield/II 1997

SOLUTION

  • SOUND
  • Sets
    • 1...Rd1
      • 2.Qc3#
    • 1...Rd2
      • 2.Qc3#
    • 1...Rc3
      • 2.Qxc3#
      • 2.Qd4#
    • 1...Re3
      • 2.Qd4#
    • 1...Rd4
      • 2.Qxd4#
    • 1...Rd5
      • 2.Qc3#
    • 1...Rd6
      • 2.Qc3#
    • 1...Rd7
      • 2.Qc3#
    • 1...Rdd8
      • 2.Qc3#
    • 1...Bb5
      • 2.Bxb5#
    • 1...Bb7
      • 2.Bb5#
  • Tries
    • 1.Bxb3+?
      • 1...Rxb3
        • 2.Qd4#
      • 1...Kxb3!
    • 1.Qf7+?
      • 1...Rd5
        • 2.Qxd5#
      • 1...Sxf7!
  • Keys
    • 1.Qb7!
      • threat
        • 2.Qb4#
      • 1...Bxb7
        • 2.Bb5#
      • 1...Rd1
        • 2.Qxb3#
      • 1...Rd2
        • 2.Qxb3#
      • 1...Rc3
        • 2.Qe4#
      • 1...Re3
        • 2.Qd5#
      • 1...Rd4
        • 2.Qxb3#
      • 1...Rd5
        • 2.Qxd5#
      • 1...Rd6
        • 2.Qxb3#
      • 1...Rd7
        • 2.Qxb3#
      • 1...Rdd8
        • 2.Qxb3#
      • 1...Bb5
        • 2.Bxb5#
        • 2.Qxb5#
      • 1...Sc6
        • 2.Qxa6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 8
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • R(b);N_GUARD::QAR1(F)
    • R(b);N_GUARD,P_PINS(B)::QAR1(F)
    • R(b);N_GUARD::QAR1(F),XR(b)
    • B(e);N_GUARD::B(D),XB(e)
    • B(e);N_GUARD::B(D)
  • Tries
    • Try
      • B(D);CHECK,XP(a)
      • Vars
        • R(b);SBLOCK,XB(D)::QAR1(F)
      • Refutation
        • K(d);S_FLIGHT,XB(D)
    • Try
      • Q(F);CHECK
      • Vars
        • R(b);N_GUARD,P_SPINR(b)::QAB1(F),XR(b)
      • Refutation
        • S(h);XQ(F)
  • Actual
    • Q(F);
    • Threat
      • QAR1(F)
    • Vars
      • B(e);N_GUARD,XQ(F)::B(D)
      • R(b);N_GUARD::QAB1(F),XP(a)
      • R(b);N_GUARD,P_PINS(B)::QAB1(F),XP(a)
      • R(b);N_GUARD::QAR2(F)
      • R(b);N_GUARD::QAB1(F)
      • R(b);N_GUARD::QAB1(F),XR(b)
      • S(f);N_GUARD::QAB(F),XB(e)
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