MESON Chess Problem Database

Problem Display
PID: 19109 (1N2b1n1/1pBn4/3P2pr/4k2p/4pR1N/2P1rPK1/B7/4R3 w - - 0 1)

Mansfield, Comins

1st Prize, Illustrated Western Weekly News, 1912

1N2b1n1/1pBn4/3P2pr/4k2p/4pR1N/2P1rPK1/B7/4R3

#2

10 + 10

4797 A Genius of the Two-mover 1936
3202 Complete Mansfield/I 1996

SOLUTION

  • SOUND
  • Sets
    • 1...Rxc3
      • 2.Rexe4#
    • 1...Rd3
      • 2.Rexe4#
    • 1...Rxf3+
      • 2.Sxf3#
    • 1...Bf7
      • 2.Sxd7#
    • 1...Sc5
      • 2.d7#
    • 1...Sb6
      • 2.d7#
    • 1...Sdf6
      • 2.d7#
    • 1...Sxb8
      • 2.d7#
    • 1...Sf8
      • 2.d7#
    • 1...Se7
      • 2.dxe7#
    • 1...exf3
      • 2.Sxf3#
      • 2.Rxe3#
    • 1...g5
      • 2.Rf5#
    • 1...b5
      • 2.Sc6#
    • 1...b6
      • 2.Sc6#
  • Tries
    • 1.Sxg6+?
      • 1...Bxg6
        • 2.Sxd7#
      • 1...Rxg6+!
    • 1.Rxe3?
      • threat
        • 2.Rexe4#
      • 1...Sc5
        • 2.d7#
      • 1...Sdf6
        • 2.d7#
      • 1...Sgf6!
  • Keys
    • 1.Rf7!
      • 1...Rxf3+
        • 2.Sxf3#
      • 1...Rxe1
        • 2.f4#
      • 1...Rxc3
        • 2.Rxe4#
      • 1...Bxf7
        • 2.Sxd7#
      • 1...Sxb8
        • 2.d7#
      • 1...exf3
        • 2.Rxe3#
      • 1...Re2
        • 2.f4#
      • 1...Rd3
        • 2.Rxe4#
      • 1...Rh7
        • 2.Sxg6#
      • 1...Rh8
        • 2.Sxg6#
      • 1...Sc5
        • 2.d7#
      • 1...Sb6
        • 2.d7#
      • 1...Sdf6
        • 2.d7#
      • 1...Sf8
        • 2.d7#
      • 1...Sgf6
        • 2.Re7#
      • 1...Se7
        • 2.dxe7#
      • 1...g5
        • 2.Rf5#
      • 1...b5
        • 2.Sc6#
      • 1...b6
        • 2.Sc6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • R(a);OGATE,P_SPINP(b),XP(C)::R1(A),XP(b)
    • R(a);OGATE,P_SPINP(b)::R1(A),XP(b)
    • R(a);CHECK,P_SPINP(b),XP(D)::S(G),XR(a)
    • B(i);N_GUARD::S(J),XS(h)
    • S(h);OGATE::B(I)+P(H)
    • S(h);OGATE,XS(J)::B(I)+P(H)
    • S(j);OGATE::B(I)+P(H),XS(j)
    • P(e);N_GUARD::R1(F)
    • P(g);N_GUARD::S(J)
  • Tries
    • Try
      • S(G);CHECK,XP(e)
      • Vars
        • B(i);XS(G)::S(J),XS(h)
      • Refutation
        • R(f);CHECK,XS(G)
    • Try
      • R(A);N_SPINP(D),P_PINP(b),XR(a)
      • Threat
        • R1(A),XP(b)
      • Vars
        • S(h);OGATE::B(I)+P(H)
      • Refutation
        • S(j);
  • Actual
    • R(F);
    • Vars
      • R(a);CHECK,P_SPINP(b),XP(D)::S(G),XR(a)
      • R(a);N_PINP(D),XR(A)::P(D)
      • R(a);OGATE,P_SPINP(b),XP(C)::R1(A),XP(b)
      • B(i);N_GUARD,XR(F)::S(J),XS(h)
      • S(h);OGATE,XS(J)::B(I)+P(H)
      • P(b);OGATEB,P_SPINR(a),XP(D)::R(A),XR(a)
      • R(a);N_PINP(D)::P(D)
      • R(a);OGATE,P_SPINP(b)::R1(A),XP(b)
      • R(f);N_GUARD::S(G),XP(e)
      • S(h);OGATE::B(I)+P(H)
      • S(j);N_GUARD,SBLOCK::R(F)
      • S(j);OGATE::B(I)+P(H),XS(j)
      • P(e);N_GUARD::R1(F)
      • P(g);N_GUARD::S(J)
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