MESON Chess Problem Database

Problem Display
PID: 6546 (4n1Q1/R1pN4/2kp3R/P4B2/K1Np4/b7/6pq/8 w - - 0 1)

Mansfield, Comins

2nd HM., Magyar Sakkvilag, 1931

4n1Q1/R1pN4/2kp3R/P4B2/K1Np4/b7/6pq/8

#2

8 + 8

3550 Complete Mansfield/II 1997

SOLUTION

  • SOUND
  • Sets
    • 1...Qg1
      • 2.Sce5#
    • 1...Qe5
      • 2.Scxe5#
    • 1...Qh1
      • 2.Sce5#
    • 1...Qh3
      • 2.Sce5#
    • 1...Qh4
      • 2.Sce5#
    • 1...Qh5
      • 2.Sce5#
    • 1...Bc5
      • 2.Sb8#
    • 1...Sf6
      • 2.Qa8#
    • 1...Sg7
      • 2.Qa8#
  • Tries
    • 1.Scb6?
      • threat
        • 2.Be4#
        • 2.Qd5#
      • 1...Qxh6
        • 2.Qd5#
      • 1...cxb6
        • 2.Be4#
      • 1...Qf4
        • 2.Qd5#
      • 1...Qh4
        • 2.Qd5#
      • 1...Qh5
        • 2.Qd5#
      • 1...Sf6
        • 2.Qa8#
      • 1...Qe5!
    • 1.Qxe8?
      • threat
        • 2.Be4#
        • 2.Qe4#
        • 2.Qa8#
      • 1...Qxh6
        • 2.Qa8#
      • 1...Qf4
        • 2.Qa8#
      • 1...Qe5
        • 2.Qa8#
      • 1...Qh4
        • 2.Qa8#
      • 1...Qh5
        • 2.Qe4#
        • 2.Qa8#
      • 1...Kd5!
    • 1.a6?
      • threat
        • 2.Sa5#
      • 1...Qe5
        • 2.Scxe5#
      • 1...Bb4!
  • Keys
    • 1.Sxd6!
      • threat
        • 2.Ra6#
      • 1...Qxd6
        • 2.Qxg2#
      • 1...Bxd6
        • 2.Qc4#
      • 1...Sxd6
        • 2.Qa8#
      • 1...cxd6
        • 2.Be4#
      • 1...Bc5
        • 2.Sb8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 8
  • Sets
    • Q(b);N_GUARD::S(B)
    • Q(b);N_GUARD::S(B),XQ(b)
    • B(c);SBLOCK::S(G)
    • S(h);N_SPINP(f),OGATE::QAB(H)
    • S(h);OGATE::QAB(H)
  • Tries
    • Try
      • S(B);
      • Threat
        • DUALS(2)
      • Vars
        • Q(b);N_SPINP(f),XR(E)::QAB1(H)
        • P(g);XS(B)::B(D)
        • Q(b);::QAB1(H)
        • S(h);N_SPINP(f),OGATE::QAB(H)
      • Refutation
        • Q(b);
    • Try
      • Q(H);XS(h)
      • Threat
        • DUALS(3)
      • Vars
        • Q(b);N_SPINP(f),XR(E)::QAB(H)
        • Q(b);::QAB(H)
      • Refutation
        • K(e);N_SPINP(f),S_FLIGHT
    • Try
      • P(C);
      • Threat
        • S(B)
      • Vars
        • Q(b);N_GUARD::S(B),XQ(b)
      • Refutation
        • B(c);
  • Actual
    • S(B);XP(f)
    • Threat
      • R(F)
    • Vars
      • Q(b);N_GUARD,P_SPINQ(b),XS(B)::QAB(H),XP(a)
      • B(c);N_GUARD,P_SPINB(c),XS(B)::QAR2(H)
      • S(h);OGATE,P_SPINS(h),XS(B)::QAB(H)
      • P(g);P_SPINP(g),XS(B)::B(D)
      • B(c);SBLOCK::S(G)
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