MESON Chess Problem Database

Problem Display
PID: 6906 (4B2K/pN4pb/1p2Q2b/2Pr3p/2k1p3/n1B2Rq1/r1P5/1N6 w - - 0 1)

Mansfield, Comins

Skakbladet, 1934

4B2K/pN4pb/1p2Q2b/2Pr3p/2k1p3/n1B2Rq1/r1P5/1N6

#2

9 + 12

3550 Complete Mansfield/II 1997

SOLUTION

  • SOUND
  • Sets
    • 1...Rb2
      • 2.Sxa3#
    • 1...Bd2
      • 2.Sxd2#
    • 1...bxc5
      • 2.Sa5#
    • 1...g5
      • 2.Sd2#
  • Tries
    • 1.Sa5+?
      • 1...Kxc5
        • 2.Qc6#
      • 1...bxa5!
    • 1.Qxe4+?
      • 1...Rd4
        • 2.Qxd4#
      • 1...Bxe4!
    • 1.Qxb6?
      • threat
        • 2.Sa5#
        • 2.Qb3#
        • 2.Qb4#
      • 1...Rxc2
        • 2.Sxa3#
        • 2.Sa5#
        • 2.Qb4#
      • 1...Rxc5
        • 2.Qxc5#
        • 2.Qb3#
      • 1...Sxb1
        • 2.Bb5#
        • 2.Qb3#
        • 2.Qb4#
        • 2.Qb5#
      • 1...Sxc2
        • 2.Qb5#
      • 1...Rd1
        • 2.Qb3#
      • 1...Rd2
        • 2.Qb3#
      • 1...Rd3
        • 2.Qb3#
      • 1...Rd4
        • 2.Qb3#
      • 1...Re5
        • 2.Qb3#
      • 1...Rf5
        • 2.Qb3#
      • 1...Rg5
        • 2.Qb3#
      • 1...Rd6
        • 2.Qb3#
      • 1...Rd7
        • 2.Qb3#
      • 1...Rd8
        • 2.Qb3#
      • 1...Rb2
        • 2.Sxa3#
        • 2.Sa5#
      • 1...Sb5
        • 2.Bxb5#
        • 2.Qxb5#
      • 1...a5
        • 2.Sxa5#
        • 2.Qb3#
      • 1...axb6!
  • Keys
    • 1.Qc6!
      • threat
        • 2.Qa4#
      • 1...Rxc5
        • 2.Bf7#
      • 1...Sxb1
        • 2.Qb5#
      • 1...Sxc2
        • 2.Qb5#
      • 1...Rb2
        • 2.Sxa3#
      • 1...Rd1
        • 2.cxb6#
      • 1...Rd2
        • 2.cxb6#
      • 1...Rd3
        • 2.cxb6#
      • 1...Rd4
        • 2.cxb6#
      • 1...Re5
        • 2.Sd6#
      • 1...Rf5
        • 2.Qxe4#
      • 1...Rg5
        • 2.Sd2#
      • 1...Rd6
        • 2.cxd6#
      • 1...Rd7
        • 2.cxb6#
      • 1...Rd8
        • 2.cxb6#
      • 1...Sb5
        • 2.Qxb5#
      • 1...b5
        • 2.Sa5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 15
    • REMOVED MATES = 3
  • Sets
    • R(a);N_GUARD::S(A),XS(b)
    • B(i);N_GUARD::S(A),XB(i)
    • P(h);N_GUARD,SBLOCK,XP(E)::S(G)
    • P(k);S_CUTB(i)::S(A)
  • Tries
    • Try
      • S(G);CHECK
      • Vars
        • K(d);N_SPINR(f),P-FLIGHT,XP(E)::QAR1(F)
      • Refutation
        • P(h);XS(G)
    • Try
      • Q(F);CHECK,N_PINR(f),XP(e)
      • Vars
        • R(f);N_GUARD,P_SPINR(f)::QAR1(F),XR(f)
      • Refutation
        • B(l);XQ(F)
    • Try
      • Q(F);N_PINR(f),XP(h)
      • Threat
        • DUALS(3)
      • Vars
        • S(b);N_GUARD,XP(B)::QAB1(F)
        • R(f);::QAB1(F)
        • R(f);P_PINB(H)::QAB1(F)
      • Refutation
        • P(j);XQ(F)
  • Actual
    • Q(F);N_PINR(f)
    • Threat
      • QAR2(F)
    • Vars
      • R(f);OGATEB,P_SPINR(f),XP(E)::B(H)
      • S(b);N_GUARD,XS(A)::QAB1(F)
      • S(b);N_GUARD,XP(B)::QAB1(F)
      • R(a);N_GUARD::S(A),XS(b)
      • R(f);N_GUARD::QAR(F)+P(E),XP(h)
      • R(f);N_GUARD,S_CUTQ(c)::S(G)
      • R(f);OGATE::QAR2(F),XP(e)
      • R(f);N_GUARD,S_CUTB(i)::S(A)
      • R(f);OGATE::QAR(F)+P(E),XR(f)
      • R(f);N_GUARD,P_PINB(H)::QAR(F)+P(E),XP(h)
      • S(b);N_GUARD::QAB1(F),XS(b)
      • P(h);N_GUARD::S(G)
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