MESON Chess Problem Database

Problem Display
PID: 17523 (Rb1N4/pb3q2/kP2r3/p1B5/8/K2R3r/1Q5p/5B2 w - - 0 1)

Mansfield, Comins

1st Prize, Milwaukee Journal, 1947

Rb1N4/pb3q2/kP2r3/p1B5/8/K2R3r/1Q5p/5B2

#2

8 + 9

3105 FIDE Album (1945-1955) 1964
3550 Complete Mansfield/II 1997
4054 Complete Mansfield/III 1999
133 The Problemist Supplement 2010

SOLUTION

  • SOUND
  • Sets
    • 1...Qg8
      • 2.Re3#
    • 1...Qc7
      • 2.Re3#
    • 1...Qe7
      • 2.Re3#
    • 1...Qg7
      • 2.Re3#
    • 1...Rxd3+
      • 2.Bxd3#
    • 1...Rxb6
      • 2.Qxb6#
    • 1...Bg3
      • 2.Rxa7#
    • 1...Bf4
      • 2.Re3#
      • 2.Rxa7#
    • 1...Be5
      • 2.Rf3#
      • 2.Rxa7#
    • 1...Bd6
      • 2.Rxa7#
    • 1...Bc7
      • 2.Rxa7#
  • Keys
    • 1.bxa7!
      • threat
        • 2.axb8S#
      • 1...Rxd3+
        • 2.Bxd3#
      • 1...Bxa7
        • 2.Rxa7#
      • 1...Bg3
        • 2.Rd6#
      • 1...Bf4
        • 2.Re3#
      • 1...Be5
        • 2.Rf3#
      • 1...Bd6
        • 2.Qb6#
      • 1...Bc7
        • 2.Qxb7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 3
    • REMOVED MATES = 5
  • Sets
    • Q(h);N_GUARD::B(A)+R(D)
    • Q(h);N_GUARD,P_PINB(E)::B(A)+R(D)
    • R(b);CHECK,OGATE,P_SPINR(b),XR(D)::B(A),XR(b)
    • R(e);OGATE,XP(F)::QAR1(B),XR(e)
    • B(i);N_GUARD,N_PINR(D)::R1(G),XP(f)
    • B(i);N_GUARD,P_PINB(E)::R1(G),XP(f)
    • B(i);N_GUARD::R1(G),XP(f)
  • Actual
    • P(F);XP(f)
    • Threat
      • PXB(i)=S
    • Vars
      • R(b);CHECK,OGATE,P_SPINR(b),XR(D)::B(A),XR(b)
      • B(i);OGATE,P_SPINB(i),XP(F)::R1(G),XB(i)
      • B(i);N_PINR(D)::B(A)+R(D),DCHECK
      • B(i);S_CUTQ(h)::B(A)+R(D)
      • B(i);S_CUTR(e)::B(A)+R(D)
      • B(i);P_PINB(E),S_CUTR(e)::QAR1(B)
      • B(i);S_CUTQ(h)::QAB1(B),XB(g)
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