MESON Chess Problem Database

Problem Display
PID: 18120 (1R6/Q3pK1k/7P/2p5/5B2/3R4/n1Bp4/bq6 w - - 0 1)

Mansfield, Comins

1st Prize, The Argonaut, 1953

1R6/Q3pK1k/7P/2p5/5B2/3R4/n1Bp4/bq6

#2

7 + 7

3105 FIDE Album (1945-1955) 1964
721 Variantim 1991
3550 Complete Mansfield/II 1997
133 The Problemist Supplement 2005
56 The Problemist 2011
56 The Problemist 2013

SOLUTION

  • SOUND
  • Sets
    • 1...Qe1
      • 2.Re3#
    • 1...Qg1
      • 2.Rg3#
    • 1...Qh1
      • 2.Rf3#
    • 1...Qb3+
      • 2.Rdxb3#
    • 1...Qb4
      • 2.Rd4#
    • 1...Qb6
      • 2.Rd6#
    • 1...Qb7
      • 2.Rd5#
    • 1...Qxb8
      • 2.Rd8#
  • Tries
    • 1.Rh8+?
      • 1...Kxh8
        • 2.Rd8#
      • 1...Bxh8!
    • 1.Qb7?
      • threat
        • 2.Qe4#
      • 1...Qb3+
        • 2.Rxb3#
      • 1...Qxb7
        • 2.Rd5#
      • 1...Qe1
        • 2.Re3#
      • 1...Qg1
        • 2.Rg3#
      • 1...Qh1
        • 2.Rf3#
      • 1...Qb4
        • 2.Rd4#
      • 1...Qb6
        • 2.Rd6#
      • 1...Sc3!
    • 1.Qxe7?
      • threat
        • 2.Qe4#
      • 1...Qb3+
        • 2.Rdxb3#
      • 1...Qxb8
        • 2.Rd8#
      • 1...Qe1
        • 2.Re3#
      • 1...Qg1
        • 2.Rg3#
      • 1...Qh1
        • 2.Rf3#
      • 1...Qb4
        • 2.Rd4#
      • 1...Qb6
        • 2.Rd6#
      • 1...Qb7
        • 2.Rd5#
      • 1...Sc3
        • 2.Kf6#
      • 1...Be5!
  • Keys
    • 1.Qa8!
      • threat
        • 2.Qe4#
      • 1...Qb3+
        • 2.Rdxb3#
      • 1...Qxb8
        • 2.Rd8#
      • 1...Qe1
        • 2.Re3#
      • 1...Qg1
        • 2.Rg3#
      • 1...Qh1
        • 2.Rf3#
      • 1...Qb4
        • 2.Rd4#
      • 1...Qb6
        • 2.Rd6#
      • 1...Qb7
        • 2.Rd5#
      • 1...Sc3
        • 2.Rh8#

There are these versions: 143327

There are these afters: 143328

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • Q(b);N_GUARD::B(A)+R(B)
    • Q(b);CHECK,N_GUARD::B(A)+R(B),XQ(b)
    • Q(b);N_GUARD,XR(G)::B(A)+R(B)
  • Tries
    • Try
      • R(G);CHECK
      • Vars
        • K(g);P-FLIGHT,XR(G)::R(B)
      • Refutation
        • B(a);XR(G)
    • Try
      • Q(E);
      • Threat
        • QAB(E)
      • Vars
        • Q(b);CHECK,N_GUARD::B(A)+R(B),XQ(b)
        • Q(b);N_GUARD,XQ(E)::B(A)+R(B)
        • Q(b);N_GUARD::B(A)+R(B)
      • Refutation
        • S(c);
    • Try
      • Q(E);XP(f)
      • Threat
        • QAB(E)
      • Vars
        • Q(b);CHECK,N_GUARD::B(A)+R(B),XQ(b)
        • Q(b);N_GUARD,XR(G)::B(A)+R(B)
        • Q(b);N_GUARD::B(A)+R(B)
        • Q(b);N_GUARD,P_PINQ(E)::B(A)+R(B)
        • S(c);::QAR(E)+K(F)
      • Refutation
        • B(a);
  • Actual
    • Q(E);
    • Threat
      • QAB(E)
    • Vars
      • Q(b);CHECK,N_GUARD::B(A)+R(B),XQ(b)
      • Q(b);N_GUARD,XR(G)::B(A)+R(B)
      • Q(b);N_GUARD::B(A)+R(B)
      • S(c);S_CUTB(a)::R1(G)
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