MESON Chess Problem Database

Problem Display
PID: 18948 (3n4/1rN5/b5pN/4p1pq/Q2pk3/2PR1R2/2P1K1PB/8 w - - 0 1)

Mansfield, Comins

Skakbladet, 1959

3n4/1rN5/b5pN/4p1pq/Q2pk3/2PR1R2/2P1K1PB/8

#2

10 + 9

3550 Complete Mansfield/II 1997
5454 Near Snap 2007

SOLUTION

  • SOUND
  • Sets
    • 1...Qxf3+
      • 2.gxf3#
    • 1...Qh4
      • 2.Re3#
    • 1...Rb5
      • 2.Re3#
    • 1...Bxd3+
      • 2.cxd3#
    • 1...Sc6
      • 2.Qxc6#
    • 1...Se6
      • 2.Qc6#
    • 1...Sf7
      • 2.Qc6#
    • 1...g4
      • 2.Re3#
  • Tries
    • 1.Sg4?
      • threat
        • 2.Sf2#
        • 2.Sf6#
      • 1...Bxd3+
        • 2.cxd3#
      • 1...Rxc7
        • 2.Sf6#
      • 1...Qh4
        • 2.Sf6#
      • 1...Qh8
        • 2.Sf2#
      • 1...Rb6
        • 2.Sf2#
      • 1...Qxg4!
    • 1.Qc4?
      • threat
        • 2.Re3#
        • 2.Qd5#
      • 1...Qxf3+
        • 2.gxf3#
      • 1...Rxc7
        • 2.Re3#
      • 1...Rb5
        • 2.Re3#
      • 1...Bxc4!
  • Keys
    • 1.Qe8!
      • threat
        • 2.Qxe5#
      • 1...Qxf3+
        • 2.gxf3#
      • 1...Bxd3+
        • 2.cxd3#
      • 1...Qxh2
        • 2.Qxg6#
      • 1...Rb5
        • 2.Rxd4#
      • 1...Sc6
        • 2.Qxc6#
      • 1...Se6
        • 2.Qc6#
      • 1...Sf7
        • 2.Qc6#
      • 1...g4
        • 2.Rf4#

Anticipated by 6377(1929/I)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • Q(e);CHECK,OGATE,XR(G)::P(C),XQ(e)
    • Q(e);OGATE::R1(G)
    • R(h);N_PINR(F),P_PINR(G)::R1(F)
    • B(f);CHECK,OGATE,P_PINR(G),XR(F)::P(A),XB(f)
    • S(i);N_GUARD::QAB(H),XS(i)
    • S(i);N_GUARD::QAB(H)
    • P(d);OGATE::R1(G)
  • Tries
    • Try
      • S(I);
      • Threat
        • DUALS(2)
      • Vars
        • B(f);CHECK,OGATE,XR(F)::P(A),XB(f)
        • R(h);XS(J)::S(I)
        • Q(e);::S(I)
        • R(h);::S(I)
      • Refutation
        • Q(e);XS(I)
    • Try
      • Q(H);N_SPINR(F),P_SPINR(G)
      • Threat
        • DUALS(2)
      • Vars
        • Q(e);CHECK,OGATE,XR(G)::P(C),XQ(e)
        • R(h);XS(J)::R1(F)
        • R(h);::R1(F)
      • Refutation
        • B(f);N_PINR(G),N_SPINP(a),P_PINR(F),XQ(H)
  • Actual
    • Q(H);N_PINP(a),P_PINP(c)
    • Threat
      • QAR1(H),XP(c)
    • Vars
      • Q(e);CHECK,OGATE,XR(G)::P(C),XQ(e)
      • B(f);CHECK,OGATE,P_PINR(G),XR(F)::P(A),XB(f)
      • Q(e);N_GUARD,P_PINP(C),XB(D)::QAB(H),XP(g)
      • R(h);N_PINR(F),P_PINR(G)::R1(F),XP(a)
      • S(i);N_GUARD::QAB(H),XS(i)
      • S(i);N_GUARD,N_SPINP(c)::QAB(H)
      • S(i);N_GUARD::QAB(H)
      • P(d);OGATE::R1(G)
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