MESON Chess Problem Database

Problem Display
PID: 6323 (1Q4n1/3p2q1/KbN1b1r1/p1k5/7R/1p2N3/2P5/4n1BB w - - 0 1)

Mansfield, Comins

1st Prize, Shakhmaty, 1928/II

1Q4n1/3p2q1/KbN1b1r1/p1k5/7R/1p2N3/2P5/4n1BB

#2

8 + 10

881 The Australasian Chess Review 1929
3098 FIDE Album (1914-1944) (I) 1971
3202 Complete Mansfield/I 1996

SOLUTION

  • SOUND
  • Sets
    • 1...Bh3
      • 2.Rc4#
    • 1...Bc4+
      • 2.Rxc4#
    • 1...Bf5
      • 2.Rc4#
    • 1...d6
      • 2.Qxb6#
  • Tries
    • 1.Sc4+?
      • 1...Rxg1
        • 2.Qd6#
        • 2.Qxb6#
      • 1...Qd4!
    • 1.Sf5+?
      • 1...Rxg1
        • 2.Qd6#
        • 2.Qxb6#
      • 1...Qd4!
    • 1.Qe5+?
      • 1...Bd5
        • 2.Rc4#
        • 2.Qxd5#
      • 1...d5
        • 2.Rc4#
      • 1...Qxe5!
  • Keys
    • 1.Se5!
      • threat
        • 2.Qxb6#
      • 1...Bc4+
        • 2.Rxc4#
      • 1...Bc7
        • 2.Qxc7#
      • 1...Bg4
        • 2.Sd5#
      • 1...Ba7
        • 2.S3g4#
        • 2.Qc7#
      • 1...Bd8
        • 2.S3g4#
      • 1...Bh3
        • 2.Rc4#
      • 1...Bd5
        • 2.Sg2#
      • 1...Bf5
        • 2.Rc4#
      • 1...Bf7
        • 2.Sxd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 1
  • Sets
    • B(f);N_GUARD::R1(E)
    • B(f);CHECK,N_GUARD::R1(E),XB(f)
    • P(h);SBLOCK::QAB1(H),XB(e)
  • Tries
    • Try
      • S(D);CHECK
      • Refutation
        • Q(i);P_SPINQ(i)
    • Try
      • S(D);CHECK
      • Refutation
        • Q(i);P_SPINQ(i)
    • Try
      • Q(H);CHECK
      • Vars
        • P(h);P_SPINP(h)::R1(E)
      • Refutation
        • Q(i);XQ(H)
  • Actual
    • S(G);
    • Threat
      • QAB1(H),XB(e)
    • Vars
      • B(f);CHECK,N_GUARD::R1(E),XB(f)
      • B(e);N_GUARD::QAR2(H),XB(e)
      • B(f);S_CUTR(g)::B(A)+S(D)
      • B(e);::B(A)+S(D)
      • B(f);N_GUARD::R1(E)
      • B(f);SBLOCK::B(A)+S(D)
      • B(f);N_GUARD,S_CUTQ(i)::S(G),XP(h)
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