MESON Chess Problem Database

Problem Display
PID: 17053 (3q4/3r1pp1/4pNk1/pR6/7Q/3RN1r1/K1B5/2bb4 w - - 0 1)

Mansfield, Comins

To Alain White, 1945

3q4/3r1pp1/4pNk1/pR6/7Q/3RN1r1/K1B5/2bb4

#2

7 + 10

56 The Problemist 1954
3105 FIDE Album (1945-1955) 1964
3550 Complete Mansfield/II 1997

SOLUTION

  • SOUND
  • Sets
    • 1...Rxe3
      • 2.Qg5#
    • 1...Rf3
      • 2.Qg5#
    • 1...Rh3
      • 2.Qg5#
    • 1...Rg5
      • 2.Qxg5#
    • 1...Bg4
      • 2.Qg5#
  • Tries
    • 1.Qxg3+?
      • 1...Kxf6
        • 2.Qg5#
      • 1...Kh6
        • 2.Qg5#
      • 1...Bg4!
    • 1.Qe4+?
      • 1...Kh6
        • 2.Qh7#
      • 1...Kxf6!
  • Keys
    • 1.Sed5!
      • threat
        • 2.Rxg3#
      • 1...Kf5
        • 2.Se7#
      • 1...Rxd3
        • 2.Bxd3#
      • 1...Bxc2
        • 2.Qh5#
      • 1...Bh5
        • 2.Qxh5#
      • 1...Rg1
        • 2.Rxd1#
        • 2.Rg3#
      • 1...Rg2
        • 2.Rg3#
      • 1...Re3
        • 2.Sf4#
      • 1...Rf3
        • 2.Qh5#
      • 1...Rh3
        • 2.Rg3#
      • 1...Rg4
        • 2.Qh5#
      • 1...Rg5
        • 2.Qh7#
      • 1...Be3
        • 2.Rxd1#
      • 1...Bg5
        • 2.Qh7#
      • 1...Bf3
        • 2.Rxf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 4
    • ADDED MATES = 9
    • REMOVED MATES = 1
  • Sets
    • R(c);N_GUARD,XS(D)::QAR1(E)
    • R(c);N_GUARD::QAR1(E)
    • R(c);N_GUARD::QAR1(E),XR(c)
    • B(b);S_CUTR(c)::QAR1(E)
  • Tries
    • Try
      • Q(E);CHECK,XR(c)
      • Vars
        • K(f);P-FLIGHT,XS(G)::QAB1(E)
        • K(f);P-FLIGHT::QAB1(E)
      • Refutation
        • B(b);P_SPINB(b)
    • Try
      • Q(E);CHECK
      • Vars
        • K(f);OGATE,P-FLIGHT::QAR1(E)
      • Refutation
        • K(f);P-FLIGHT,XS(G)
  • Actual
    • S(D);
    • Threat
      • B(B)+R(C),DCHECK,XR(c)
    • Vars
      • K(f);S_FLIGHT::R(F)+S(D),DCHECK
      • R(c);OGATE,P_SPINR(c),XR(C)::B(B),XR(c)
      • B(b);N_GUARD,XB(B)::QAB1(E)
      • B(b);N_GUARD::QAB1(E),XB(b)
      • R(c);P_PINB(B)::B(B)+R(C),DCHECK
      • R(c);S_CUTB(a)::S(D)
      • R(c);S_CUTB(b)::QAB1(E)
      • R(c);::B(B)+R(C),DCHECK
      • R(c);SBLOCK::QAB1(E)
      • B(a);S_CUTR(c)::B(B)+R(C),XB(b)
      • B(a);SBLOCK::QAB1(E)
      • B(b);N_GUARD::B(B)+R(C),XB(b)
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