MESON Chess Problem Database

Problem Display
PID: 21572 (5K1B/1Q1b4/n1RN4/3k2p1/3N4/2pRPn2/1qP3B1/4rr2 w - - 0 1)

Mansfield, Comins

1st Prize, Queensland Chess Association, 1919

5K1B/1Q1b4/n1RN4/3k2p1/3N4/2pRPn2/1qP3B1/4rr2

#2

10 + 9

4797 A Genius of the Two-mover 1936
3147 Chess Problems: Introduction to an Art 1963
3202 Complete Mansfield/I 1996

SOLUTION

  • SOUND
  • Sets
    • 1...Qa1
      • 2.Qb3#
    • 1...Qc1
      • 2.Qb3#
    • 1...Qb3
      • 2.Qxb3#
    • 1...Ra1
      • 2.e4#
    • 1...Rb1
      • 2.e4#
    • 1...Rc1
      • 2.e4#
    • 1...Rd1
      • 2.e4#
    • 1...Rg1
      • 2.Bxf3#
    • 1...Rh1
      • 2.Bxf3#
    • 1...Bxc6
      • 2.Qxc6#
    • 1...Be6
      • 2.Se2#
      • 2.Sb3#
      • 2.Sxf3#
      • 2.S4b5#
      • 2.S4f5#
    • 1...Sb4
      • 2.Qb5#
  • Tries
    • 1.Rc5+?
      • 1...Kxd6
        • 2.Rd5#
        • 2.Qd5#
      • 1...Kxc5!
    • 1.Rb6+?
      • 1...Bc6
        • 2.Qxc6#
      • 1...Kc5!
    • 1.Qb5+?
      • 1...Sc5
        • 2.Qc4#
        • 2.Qxc5#
      • 1...Qxb5!
  • Keys
    • 1.Se4!
      • threat
        • 2.Rc5#
      • 1...Sg1+
        • 2.Sf5#
      • 1...Sd2+
        • 2.Sf5#
      • 1...Sh2+
        • 2.Sf5#
      • 1...Sxd4+
        • 2.Sf2#
      • 1...Sh4+
        • 2.Sf5#
      • 1...Se5+
        • 2.Sf6#
      • 1...Kxe4
        • 2.Re6#
      • 1...Qxb7
        • 2.Sxc3#
      • 1...Bxc6
        • 2.Qxc6#
      • 1...Sc5
        • 2.Rxc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 10
  • Sets
    • Q(c);N_GUARD::QAB(H)
    • Q(c);N_GUARD::QAB(H),XQ(c)
    • R(a);N_GUARD::P(D)
    • R(b);N_GUARD::B(B),XS(e)
    • B(i);OGATE,P_SPINB(i),XR(F)::QAB1(H),XB(i)
    • S(h);N_GUARD,S_CUTQ(c)::QAR2(H)
  • Tries
    • Try
      • R(F);CHECK
      • Refutation
        • K(f);N_SPINS(e),P-FLIGHT,XR(F)
    • Try
      • R(F);CHECK
      • Vars
        • B(i);N_GUARD,P_SPINB(i)::QAB1(H),XB(i)
      • Refutation
        • K(f);N_SPINS(e),P-FLIGHT
    • Try
      • Q(H);CHECK
      • Refutation
        • Q(c);XQ(H)
  • Actual
    • S(G);N_PINS(e)
    • Threat
      • QAB(H)+R(F),DCHECK
    • Vars
      • S(e);CHECK,N_GUARD::R(C)+S(E)
      • S(e);CHECK,P_SPINS(e),XS(E)::B(B)+S(G)
      • S(e);CHECK,SBLOCK::B(B)+S(G),DCHECK
      • K(f);P_SPINS(e),S_FLIGHT,XS(G)::QAB(H)+R(F),DCHECK
      • Q(c);N_GUARD,XQ(H)::S(G),XP(d)
      • B(i);OGATE,P_SPINB(i),XR(F)::QAB1(H),XB(i)
      • S(h);::QAB(H)+R(F),DCHECK,XS(h)
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