MESON Chess Problem Database

Problem Display
PID: 55716 (8/4R2Q/5p2/K2Pqr1p/ppp1kN2/r1P2Rp1/1n4B1/8 w - - 0 1)

Mansfield, Comins

Brogi MT (Sinfonie Scacchistiche), 1977

8/4R2Q/5p2/K2Pqr1p/ppp1kN2/r1P2Rp1/1n4B1/8

#2

8 + 11

4054 Complete Mansfield/III 1999

SOLUTION

  • SOUND
  • Sets
    • 1...Qe6
      • 2.Rxe6#
  • Tries
    • 1.Se2?
      • threat
        • 2.Rxg3#
      • 1...Qxe7
        • 2.Qxf5#
      • 1...Rxc3
        • 2.Rxc3#
      • 1...Qe6
        • 2.Qxf5#
      • 1...Kxd5!
    • 1.Rxe5+?
      • 1...Kxe5
        • 2.Qe7#
      • 1...fxe5!
  • Keys
    • 1.Se6!
      • threat
        • 2.Rxg3#
      • 1...Qc7+
        • 2.Sxc7#
      • 1...Qxd5+
        • 2.Sc5#
      • 1...Kxd5
        • 2.Rd3#
      • 1...Qxc3
        • 2.Qxf5#
      • 1...Qxe6
        • 2.Qxf5#
      • 1...Rxc3
        • 2.Rxc3#
      • 1...Qd4
        • 2.Qxf5#
      • 1...Qf4
        • 2.Sxf4#
      • 1...Qd6
        • 2.Qxf5#
      • 1...Qb8
        • 2.Sc7#
        • 2.Qxf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
    • Q(h);OGATEB::R(G),XQ(h)
  • Tries
    • Try
      • S(D);
      • Threat
        • B(A)+R(C),XP(c)
      • Vars
        • Q(h);N_SPINQ(h),XR(G)::QAB1(H),XR(i)
        • R(b);OGATE,XP(B)::B(A)+R(C),XR(b)
        • Q(h);::QAB1(H),XR(i)
      • Refutation
        • K(g);N_SPINQ(h),N_SPINR(i),S_FLIGHT,XP(F)
    • Try
      • R(G);CHECK,N_SPINP(F),XQ(h)
      • Vars
        • K(g);N_SPINR(i),P-FLIGHT,XR(G)::QAR2(H)
      • Refutation
        • P(k);XR(G)
  • Actual
    • S(D);N_PINQ(h)
    • Threat
      • B(A)+R(C),XP(c)
    • Vars
      • Q(h);CHECK::R(G)+S(D),XQ(h)
      • Q(h);CHECK,SBLOCK,XP(F)::R(G)+S(D),DCHECK
      • K(g);N_SPINR(i),S_FLIGHT,XP(F)::B(A)+R(C),DCHECK
      • Q(h);N_GUARD,XP(B)::QAB1(H),XR(i)
      • Q(h);N_GUARD,P_SPINQ(h),XS(D)::QAB1(H),XR(i)
      • R(b);OGATE,XP(B)::B(A)+R(C),XR(b)
      • Q(h);N_GUARD::QAB1(H),XR(i)
      • Q(h);::R(G)+S(D),XQ(h)
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Developed and maintained by Brian Stephenson.
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