MESON Chess Problem Database

Problem Display
PID: 10038 (6Q1/1n6/1r2pK2/nP1k2N1/1B1p3p/Np1R1p2/3P4/4br1B w - - 0 1)

Mansfield, Comins

5th Comm., Problem 034. TT, 1961

6Q1/1n6/1r2pK2/nP1k2N1/1B1p3p/Np1R1p2/3P4/4br1B

#2

9 + 11

3550 Complete Mansfield/II 1997

SOLUTION

  • SOUND
  • Sets
    • 1...Rg1
      • 2.Bxf3#
    • 1...Rxb5
      • 2.Qxe6#
    • 1...Bf2
      • 2.Bxf3#
    • 1...Sc6
      • 2.Qxe6#
    • 1...Sd6
      • 2.Qxe6#
  • Tries
    • 1.Sxe6?
      • threat
        • 2.Rxd4#
      • 1...Rxe6+
        • 2.Qxe6#
      • 1...Ke4
        • 2.Rxd4#
      • 1...Bf2
        • 2.Bxf3#
      • 1...Sc6
        • 2.Sg5#
      • 1...Rxb5!
  • Keys
    • 1.Sxf3!
      • threat
        • 2.Rxd4#
      • 1...Rxf3+
        • 2.Bxf3#
      • 1...Ke4
        • 2.Rxd4#
      • 1...Rxb5
        • 2.Qxe6#
      • 1...Bf2
        • 2.Sg1#
      • 1...Sc6
        • 2.Qxe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • R(b);N_GUARD::B(A),XP(d)
    • R(i);N_GUARD,XP(F)::QAB1(I),XP(j)
    • B(a);S_CUTR(b)::B(A),XP(d)
    • S(g);S_CUTR(i)::QAB1(I),XP(j)
    • S(k);S_CUTR(i)::QAB1(I),XP(j)
  • Tries
    • Try
      • S(G);P_SPINS(G),XP(j)
      • Threat
        • R1(D),XP(e)
      • Vars
        • R(i);CHECK,OGATE,P_SPINR(i),XS(G)::QAB1(I),XR(i)
        • K(h);S_FLIGHT::R1(D),XP(e)
        • B(a);S_CUTR(b)::B(A),XP(d)
        • S(g);N_PINS(G)::QAB(I)+S(G)
      • Refutation
        • R(i);N_PINS(G),XP(F)
  • Actual
    • S(G);P_PINP(e),P_SPINS(G),XP(d)
    • Threat
      • R1(D),XP(e)
    • Vars
      • R(b);CHECK,OGATE,P_SPINR(b),XS(G)::B(A),XR(b)
      • K(h);N_SPINP(e),S_FLIGHT::R1(D),XP(e)
      • R(i);N_GUARD,XP(F)::QAB1(I),XP(j)
      • B(a);N_PINS(G)::B(A)+S(G)
      • S(g);S_CUTR(i)::QAB1(I),XP(j)
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