MESON Chess Problem Database

Problem Display
PID: 22 (2N5/1pP4Q/R1r1kp2/2nN3p/1PB2P1r/1pP1K2p/n3b3/4R3 w - - 0 1)

Mansfield, Comins

Brisbane Courier, 1930-1931

2N5/1pP4Q/R1r1kp2/2nN3p/1PB2P1r/1pP1K2p/n3b3/4R3

#2

11 + 11

3550 Complete Mansfield/II 1997

SOLUTION

  • SOUND
  • Sets
    • 1...Rb6
      • 2.Rxb6#
    • 1...Rd6
      • 2.Rxd6#
    • 1...Bd1
      • 2.Sdb6#
    • 1...Bg4
      • 2.Sdb6#
    • 1...f5
      • 2.Qe7#
    • 1...b5
      • 2.Rxc6#
  • Tries
    • 1.Sxf6+?
      • 1...Kxf6
        • 2.Qf7#
      • 1...Bxc4!
    • 1.Qg8+?
      • 1...Kf5
        • 2.Sde7#
        • 2.Sce7#
      • 1...Kd7!
  • Keys
    • 1.Kd4!
      • threat
        • 2.Sdb6#
      • 1...Rxf4+
        • 2.Sxf4#
      • 1...Sxc3
        • 2.Sxc3#
      • 1...Sxb4
        • 2.Sxb4#
      • 1...Sxa6
        • 2.Rxe2#
      • 1...Rb6
        • 2.Sdxb6#
        • 2.Rxb6#
      • 1...Rd6
        • 2.Rxd6#
      • 1...Sd3
        • 2.Se3#
      • 1...Sa4
        • 2.Rxe2#
      • 1...Se4
        • 2.f5#
      • 1...Sd7
        • 2.Sde7#
      • 1...f5
        • 2.Qe7#
      • 1...b5
        • 2.Rxc6#
      • 1...b6
        • 2.Sdxb6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 3
  • Sets
    • R(h);OGATEB::R(H),XR(h)
    • R(h);OGATE::R1(H),XR(h)
    • B(b);N_GUARD::B(E)+S(G)
    • P(j);SBLOCK::QAR1(J)
    • P(k);N_GUARD::R(H),XR(h)
  • Tries
    • Try
      • S(G);CHECK,XP(j)
      • Vars
        • K(i);P-FLIGHT,XS(G)::QAR1(J)
      • Refutation
        • B(b);XB(E)
    • Try
      • Q(J);CHECK
      • Refutation
        • K(i);N_SPINR(h),S_FLIGHT
  • Actual
    • K(C);P_PINB(b),P_SPINP(F),S_FLIGHT
    • Threat
      • B(E)+S(G)
    • Vars
      • R(e);CHECK,XP(F)::B(E)+S(G),DCHECK,XR(e)
      • S(a);XP(B)::B(E)+S(G),XS(a)
      • S(a);XP(D)::B(E)+S(G),XS(a)
      • S(f);N_GUARD,N_SPINR(h),XR(H)::R(A),XB(b)
      • R(h);OGATE,P_PINS(G)::R1(H),XR(h)
      • S(f);::B(E)+S(G)
      • S(f);N_GUARD::R(A),XB(b)
      • S(f);N_PINP(F),N_SPINB(b)::P(F)
      • S(f);SBLOCK::B(E)+S(G)
      • P(j);SBLOCK::QAR1(J)
      • P(k);N_GUARD::R(H),XR(h)
      • P(k);N_SPINR(h)::B(E)+S(G),XP(k)
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