MESON Chess Problem Database

Problem Display
PID: 10742 (2r5/6n1/3R1N2/3N4/P1kn2BR/Q2pp2K/P7/1qr3b1 w - - 0 1)

Mansfield, Comins

Sunday Citizen, 1967

2r5/6n1/3R1N2/3N4/P1kn2BR/Q2pp2K/P7/1qr3b1

#2

9 + 9

4054 Complete Mansfield/III 1999

SOLUTION

  • SOUND
  • Sets
    • 1...Qxa2
      • 2.Sb6#
      • 2.Qb4#
    • 1...Qc2
      • 2.Sb6#
      • 2.Qb4#
    • 1...Qa1
      • 2.Sb6#
      • 2.Qb4#
    • 1...Qb4
      • 2.Qxb4#
    • 1...Qb6
      • 2.Sxb6#
    • 1...Rd1
      • 2.Qc3#
    • 1...Re1
      • 2.Qc3#
    • 1...Rf1
      • 2.Qc3#
    • 1...Rc3
      • 2.Qxc3#
    • 1...Bh2
      • 2.Sxe3#
    • 1...Sc2
      • 2.Qc3#
    • 1...Se2
      • 2.Bxe2#
    • 1...Sb3
      • 2.Qb4#
    • 1...Sf3
      • 2.Bxf3#
    • 1...Sb5
      • 2.Sb6#
    • 1...Sdf5
      • 2.Bxf5#
    • 1...Sde6
      • 2.Bxe6#
  • Tries
    • 1.Be6?
      • threat
        • 2.Sxe3#
        • 2.Sb6#
      • 1...Qb4
        • 2.Qxb4#
      • 1...Qb3
        • 2.axb3#
      • 1...Qb6
        • 2.Sxe3#
        • 2.Sxb6#
        • 2.Qxc1#
      • 1...e2
        • 2.Se3#
        • 2.Sb6#
      • 1...Sxe6!
    • 1.Bxc8?
      • threat
        • 2.Rc6#
      • 1...Qb4
        • 2.Qxb4#
      • 1...Qb5
        • 2.Qxc1#
      • 1...Qb6
        • 2.Sxb6#
        • 2.Qxc1#
      • 1...Qb7
        • 2.Qxc1#
      • 1...Se6!
  • Keys
    • 1.Sd7!
      • threat
        • 2.Se5#
      • 1...Sc2
        • 2.Qc3#
      • 1...Se2
        • 2.Bxe2#
      • 1...Sb3
        • 2.Qb4#
      • 1...Sf3
        • 2.Bxf3#
      • 1...Sb5
        • 2.S5b6#
      • 1...Sdf5
        • 2.Bxf5#
      • 1...Sc6
        • 2.Qc5#
      • 1...Sde6
        • 2.Bxe6#
      • 1...Qb4
        • 2.Qxb4#
      • 1...Re8
        • 2.Qc5#
      • 1...Bh2
        • 2.Sxe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 5
  • Sets
    • Q(a);N_GUARD::QAR1(B),XQ(a)
    • Q(a);N_GUARD::S(G),XQ(a)
    • R(b);N_GUARD::QAR1(B)
    • R(b);N_GUARD::QAR1(B),XR(b)
    • B(c);N_GUARD::S(G),XP(e)
    • S(g);S_CUTR(b)::QAR1(B)
    • S(g);OGATEB::R(F)+B(E),XS(g)
    • S(g);S_CUTQ(a)::QAR1(B)
    • S(g);S_CUTQ(a)::S(G)
  • Tries
    • Try
      • B(E);P_PINS(g)
      • Threat
        • DUALS(2)
      • Vars
        • Q(a);N_GUARD::QAR1(B),XQ(a)
        • Q(a);OGATE::P(A),XQ(a)
      • Refutation
        • S(h);XB(E)
    • Try
      • B(E);P_PINS(g),XR(i)
      • Threat
        • R(H)
      • Vars
        • Q(a);N_GUARD::QAR1(B),XQ(a)
        • Q(a);N_GUARD::QAR(B),XR(b)
      • Refutation
        • S(h);
  • Actual
    • S(I);
    • Threat
      • S(I)
    • Vars
      • S(g);S_CUTR(b)::QAR1(B)
      • S(g);OGATEB::R(F)+B(E),XS(g)
      • S(g);S_CUTQ(a)::QAR1(B)
      • S(g);S_CUTQ(a)::S(G)
      • S(g);S_CUTR(i)::QAR1(B)
      • Q(a);N_GUARD::QAR1(B),XQ(a)
      • R(i);N_GUARD::QAR1(B)
      • B(c);N_GUARD::S(G),XP(e)
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