MESON Chess Problem Database

Problem Display
PID: 10819 (2b5/npPn4/p4p2/1k2pP2/2R1R3/p2K4/5Q2/4BB2 w - - 0 1)

Mansfield, Comins

4th Comm., The Problemist, 1968

2b5/npPn4/p4p2/1k2pP2/2R1R3/p2K4/5Q2/4BB2

#2

8 + 9

5862 An ABC of Chess Problems 1970
4054 Complete Mansfield/III 1999

SOLUTION

  • SOUND
  • Sets
    • 1...Sc5+
      • 2.Qxc5#
    • 1...Sb6
      • 2.Rc5#
      • 2.Qc5#
    • 1...Sb8
      • 2.Qc5#
    • 1...Sf8
      • 2.Qc5#
    • 1...a2
      • 2.Qb2#
  • Tries
    • 1.Kc2?
      • 1...Sc5
        • 2.Qxc5#
      • 1...a5
        • 2.Rc3#
      • 1...Sc6
        • 2.Ra4#
      • 1...Sb6
        • 2.Rc5#
        • 2.Qc5#
      • 1...Sb8
        • 2.Qc5#
      • 1...Sf8
        • 2.Qc5#
      • 1...b6
        • 2.Rc5#
      • 1...a2!
    • 1.Kd2?
      • 1...Ka5
        • 2.Ra4#
      • 1...Sc5
        • 2.Qxc5#
      • 1...Sc6
        • 2.Ra4#
      • 1...Sb6
        • 2.Rc5#
        • 2.Qc5#
      • 1...Sb8
        • 2.Qc5#
      • 1...Sf8
        • 2.Qc5#
      • 1...a5
        • 2.Rc1#
        • 2.Rc2#
        • 2.Rc3#
      • 1...b6
        • 2.Rc5#
      • 1...a2!
    • 1.Rb4+?
      • 1...Ka5
        • 2.Rb1#
        • 2.Rb2#
        • 2.Rb3#
        • 2.Rb6#
        • 2.Rxb7#
      • 1...Kc6!
    • 1.Rc5+?
      • 1...Kb6
        • 2.Ba5#
      • 1...Sxc5+!
  • Keys
    • 1.Rc1!
      • 1...Sc5+
        • 2.Qxc5#
      • 1...a5
        • 2.Kd2#
      • 1...a2
        • 2.Qb2#
      • 1...Sc6
        • 2.Kc2#
      • 1...Sb6
        • 2.Rc5#
        • 2.Qc5#
      • 1...Sb8
        • 2.Qc5#
      • 1...Sf8
        • 2.Qc5#
      • 1...b6
        • 2.Ke3#

This is a version

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • S(h);CHECK,N_GUARD::QAR1(C),XS(h)
    • S(h);N_GUARD::QAR1(C)
    • P(a);N_GUARD::QAR(C)
  • Tries
    • Try
      • K(D);S_FLIGHT
      • Vars
        • S(h);N_GUARD::QAR1(C),XS(h)
        • P(d);SBLOCK::B(B)+R(E)
        • S(f);SBLOCK::B(B)+R(E)
        • S(h);N_GUARD::QAR1(C)
        • P(g);SBLOCK::B(B)+R(E),DCHECK
      • Refutation
        • P(a);
    • Try
      • K(D);P-FLIGHT
      • Vars
        • K(b);P-FLIGHT::R1(E)
        • S(h);N_GUARD::QAR1(C),XS(h)
        • S(f);SBLOCK::B(B)+R(E)
        • S(h);N_GUARD::QAR1(C)
        • P(g);SBLOCK::B(B)+R(E),DCHECK
      • Refutation
        • P(a);
    • Try
      • R(E);CHECK
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • R(E);CHECK
      • Vars
        • K(b);P-FLIGHT::B(A)
      • Refutation
        • S(h);CHECK,XR(E)
  • Actual
    • R(E);
    • Vars
      • S(h);CHECK,N_GUARD::QAR1(C),XS(h)
      • P(d);SBLOCK::B(B)+K(D)
      • P(a);N_GUARD::QAR(C)
      • S(f);SBLOCK::B(B)+K(D)
      • S(h);N_GUARD::QAR1(C)
      • P(g);SBLOCK::B(B)+K(D)
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