MESON Chess Problem Database

Problem Display
PID: 18963 (Q7/1N4pK/1R1N2rp/2pkBP1P/8/3pp3/r5R1/2b4B w - - 0 1)

Mansfield, Comins

3rd Prize, The Problemist, 1959

Q7/1N4pK/1R1N2rp/2pkBP1P/8/3pp3/r5R1/2b4B

#2

10 + 9

3550 Complete Mansfield/II 1997

SOLUTION

  • SOUND
  • Tries
    • 1.Rc2+?
      • 1...Rg2
        • 2.Rxc5#
      • 1...Kxe5!
    • 1.Qxa2+?
      • 1...c4
        • 2.Qa5#
      • 1...Kxe5!
    • 1.Qg8+?
      • 1...Re6
        • 2.Qxe6#
      • 1...Kxe5!
  • Keys
    • 1.Sc4!
      • 1...Kxc4
        • 2.Qxa2#
      • 1...Ke4
        • 2.Sbd6#
      • 1...Raxg2
        • 2.Sbd6#
      • 1...Rxa8
        • 2.Rg4#
      • 1...Rgxg2
        • 2.Sba5#
      • 1...Rxb6
        • 2.Rc2#
      • 1...Ra1
        • 2.Rg4#
      • 1...Rb2
        • 2.Sbd6#
      • 1...Rc2
        • 2.Sbd6#
      • 1...Rd2
        • 2.Sbd6#
      • 1...Re2
        • 2.Sbd6#
      • 1...Rf2
        • 2.Sbd6#
      • 1...Ra3
        • 2.Rg4#
      • 1...Ra4
        • 2.Rg4#
      • 1...Ra5
        • 2.Rg4#
      • 1...Ra6
        • 2.Rg4#
      • 1...Ra7
        • 2.Rg4#
      • 1...Rg3
        • 2.Sba5#
      • 1...Rg4
        • 2.Sba5#
      • 1...Rg5
        • 2.Sba5#
      • 1...Rc6
        • 2.Rc2#
      • 1...Rd6
        • 2.Rc2#
      • 1...Re6
        • 2.Rc2#
      • 1...Rf6
        • 2.Rc2#
      • 1...Bb2
        • 2.Rg4#
      • 1...Bd2
        • 2.Rg4#
      • 1...Ba3
        • 2.Sbd6#
      • 1...d2
        • 2.Rg4#
      • 1...e2
        • 2.Rg4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 29
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(B);CHECK
      • Vars
        • R(g);P_SPINR(g)::R1(B),XP(e)
      • Refutation
        • K(f);P-FLIGHT,XB(C)
    • Try
      • Q(J);CHECK,XR(b)
      • Vars
        • P(e);OGATEB,P_SPINP(e)::QAR(J)
      • Refutation
        • K(f);P-FLIGHT,XB(C)
    • Try
      • Q(J);CHECK
      • Vars
        • R(g);N_GUARD,P_SPINR(g)::QAB1(J),XR(g)
      • Refutation
        • K(f);P-FLIGHT,XB(C)
  • Actual
    • S(G);
    • Vars
      • K(f);OGATEB,S_FLIGHT,XS(G)::QAB(J),XR(b)
      • K(f);S_FLIGHT::QAB(J)+S(H),DCHECK
      • R(b);N_GUARD,P_SPINR(b),XR(B)::QAB(J)+S(H)
      • R(b);N_GUARD,XQ(J)::B(A)+R(B)
      • R(g);N_GUARD,P_SPINR(g),XR(B)::QAB(J)+S(H)
      • R(g);N_GUARD,XR(F)::B(A)+R(B)
      • R(b);N_GUARD::B(A)+R(B)
      • R(b);N_GUARD::QAB(J)+S(H)
      • R(g);N_GUARD::QAB(J)+S(H)
      • R(g);N_GUARD::B(A)+R(B)
      • B(a);S_CUTR(b)::B(A)+R(B)
      • B(a);S_CUTR(b)::QAB(J)+S(H)
      • P(c);S_CUTR(b)::B(A)+R(B)
      • P(d);S_CUTR(b)::B(A)+R(B)
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