MESON Chess Problem Database

Problem Display
PID: 17817 (2B5/2b1PRp1/3k1nRp/3P1P1p/br1Q3K/Br1N4/8/8 w - - 0 1)

Mansfield, Comins

5th HM., BCF, 1951-1952

2B5/2b1PRp1/3k1nRp/3P1P1p/br1Q3K/Br1N4/8/8

#2

10 + 9

3550 Complete Mansfield/II 1997

SOLUTION

  • SOUND
  • Sets
    • 1...Rxd3
      • 2.Bxb4#
  • Tries
    • 1.Kh3?
      • threat
        • 2.Qc5#
        • 2.Qe5#
      • 1...Bb6
        • 2.Qe5#
      • 1...Rc3
        • 2.Qe5#
      • 1...Rxd3+!
    • 1.Rg4?
      • threat
        • 2.Qc5#
        • 2.Qe5#
      • 1...Rxd3
        • 2.Bxb4#
      • 1...Sxg4
        • 2.Qc5#
      • 1...Sxd5
        • 2.Rg6#
        • 2.Qc5#
      • 1...Bb6
        • 2.Qe5#
      • 1...Rc3
        • 2.Qe5#
      • 1...Se4
        • 2.Qe5#
      • 1...Sd7
        • 2.e8S#
      • 1...g5+!
    • 1.e8Q?
      • threat
        • 2.Qe5#
        • 2.Qe6#
        • 2.Qe7#
        • 2.Qf8#
      • 1...Bd7
        • 2.Rxd7#
        • 2.Qxd7#
        • 2.Qe5#
        • 2.Qe7#
        • 2.Qf8#
      • 1...Bd8
        • 2.Qe5#
        • 2.Qe6#
      • 1...Bxe8!
    • 1.e8R?
      • threat
        • 2.Re6#
      • 1...Bd7
        • 2.Rxd7#
      • 1...Bxe8!
  • Keys
    • 1.Be6!
      • threat
        • 2.Qf4#
      • 1...Rxa3
        • 2.Qxb4#
      • 1...Rxd3
        • 2.Bxb4#
      • 1...Sxd5
        • 2.Bc8#
      • 1...Se4
        • 2.Qe5#
      • 1...Sg4
        • 2.Qc5#
      • 1...Sd7
        • 2.e8S#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • R(a);N_GUARD,XS(B)::B(A),XR(c)
  • Tries
    • Try
      • K(D);N_SPINQ(C),P-FLIGHT,P_SPINS(B)
      • Threat
        • DUALS(2)
      • Vars
        • B(h);::QAB1(C)
        • R(a);::QAB1(C)
      • Refutation
        • R(a);CHECK,XS(B)
    • Try
      • R(G);N_PINS(f),N_SPINQ(C)
      • Threat
        • DUALS(2)
      • Vars
        • R(a);N_GUARD,XS(B)::B(A),XR(c)
        • S(f);XR(G)::QAB1(C)
        • B(h);::QAB1(C)
        • R(a);::QAB1(C)
        • S(f);::QAB1(C)
        • S(f);N_GUARD,S_CUTB(b)::P=S
      • Refutation
        • P(i);CHECK
    • Try
      • P(H);
      • Threat
        • DUALS(4)
      • Refutation
        • B(b);XQ(H)
    • Try
      • P(H);
      • Threat
        • R1(H)
      • Vars
        • B(b);N_GUARD::R1(I),XB(b)
      • Refutation
        • B(b);XR(H)
  • Actual
    • B(J);N_PINS(f)
    • Threat
      • QAB(C)
    • Vars
      • R(a);N_GUARD,N_SPINR(c),XB(A)::QAB(C),XR(c)
      • R(a);N_GUARD,XS(B)::B(A),XR(c)
      • S(f);OGATEB,P_SPINS(f),XP(E)::R(G)+B(J)
      • S(f);N_PINQ(C)::QAB1(C)
      • S(f);N_GUARD,S_CUTB(b)::P=S
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