MESON Chess Problem Database

Problem Display
PID: 24610 (2b1rb2/5R2/2Bp1Q2/3P1N2/RB2k1K1/4p3/q1N1P3/3rn3 w - - 0 1)

Mansfield, Comins

2nd HM., Le Roi Blanc Peugeot TT, 1961-1962

2b1rb2/5R2/2Bp1Q2/3P1N2/RB2k1K1/4p3/q1N1P3/3rn3

#2

10 + 9

3550 Complete Mansfield/II 1997

SOLUTION

  • SOUND
  • Sets
    • 1...Qxd5
      • 2.Bd2#
    • 1...Ra1
      • 2.Qd4#
    • 1...Rb1
      • 2.Qd4#
    • 1...Rc1
      • 2.Qd4#
    • 1...Rd4
      • 2.Qxd4#
    • 1...Rxd5
      • 2.Qd4#
    • 1...Re6
      • 2.Sg3#
    • 1...Bxf5+
      • 2.Qxf5#
    • 1...Ba6
      • 2.Sg3#
    • 1...Bb7
      • 2.Sg3#
    • 1...Sd3
      • 2.Qd4#
  • Tries
    • 1.Bd2+?
      • 1...Qc4
        • 2.Rxc4#
      • 1...Qxa4!
    • 1.Ba3+?
      • 1...Rd4
        • 2.Rxd4#
        • 2.Qxd4#
      • 1...Qc4!
  • Keys
    • 1.Kh5!
      • threat
        • 2.Sg3#
      • 1...Kf4
        • 2.Bxd6#
      • 1...Qxd5
        • 2.Bd2#
      • 1...Rxd5
        • 2.Qd4#
      • 1...Bxf5
        • 2.Qxf5#
      • 1...Re5
        • 2.Qh4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 8
  • Sets
    • Q(c);N_GUARD,P_SPINQ(c),XP(F)::R(C)+B(D)
    • R(a);N_GUARD::QAR1(I)
    • R(a);N_GUARD::QAR1(I),XR(a)
    • R(a);N_GUARD,P_SPINR(a),XP(F)::QAR1(I)
    • R(h);N_PINS(G)::S(G)
    • B(g);CHECK,OGATE,XS(G)::QAB1(I),XB(g)
    • B(g);N_PINS(G)::S(G)
    • S(b);S_CUTR(a)::QAR1(I)
  • Tries
    • Try
      • B(D);CHECK
      • Vars
        • Q(c);N_GUARD,P_SPINQ(c)::R(C),XQ(c)
      • Refutation
        • Q(c);XR(C)
    • Try
      • B(D);CHECK
      • Refutation
        • Q(c);P_SPINQ(c)
  • Actual
    • K(E);N_SPINS(G),S_FLIGHT
    • Threat
      • S(G)
    • Vars
      • K(e);P-FLIGHT::R(C)+B(D),DCHECK,XP(f)
      • Q(c);N_GUARD,P_PINS(G),P_SPINQ(c),XP(F)::R(C)+B(D)
      • R(a);N_GUARD,P_PINS(G),P_SPINR(a),XP(F)::QAR1(I)
      • B(g);OGATE,XS(G)::QAB1(I),XB(g)
      • R(h);P_PINS(G),SBLOCK::QAR(I)
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