MESON Chess Problem Database

Problem Display
PID: 51304 (6n1/3N2PK/6Rb/2N2k1p/2pr1P2/2p2Q2/2P5/8 w - - 0 1)

Maclay, J Neil

Manchester Guardian, 1956

6n1/3N2PK/6Rb/2N2k1p/2pr1P2/2p2Q2/2P5/8

#2

8 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Rd1
      • 2.Qe4#
    • 1...Rd2
      • 2.Qe4#
    • 1...Rd3
      • 2.Qe4#
    • 1...Re4
      • 2.Qxe4#
    • 1...Rxf4
      • 2.Qd5#
    • 1...Rd5
      • 2.Qe4#
    • 1...Rd6
      • 2.Qe4#
    • 1...Rxd7
      • 2.Qe4#
    • 1...Bxf4
      • 2.Qh3#
    • 1...Bg5
      • 2.Rxg5#
    • 1...Bxg7
      • 2.Rg5#
    • 1...Sf6+
      • 2.Rxf6#
    • 1...Se7
      • 2.Rf6#
    • 1...h4
      • 2.Qg4#
  • Tries
    • 1.Qxh5+?
      • 1...Bg5
        • 2.Qxg5#
      • 1...Kxf4!
    • 1.Qe3?
      • threat
        • 2.Qe5#
      • 1...Bxf4
        • 2.Qh3#
        • 2.Qe6#
      • 1...Bxg7
        • 2.Rg5#
      • 1...Bg5
        • 2.Rxg5#
      • 1...Re4
        • 2.Qxe4#
      • 1...Rd5
        • 2.Qe4#
      • 1...Sf6+!
  • Keys
    • 1.Qg2!
      • 1...Sf6+
        • 2.Rxf6#
      • 1...Kxf4
        • 2.Qf2#
      • 1...Rxf4
        • 2.Qd5#
      • 1...Rxd7
        • 2.Qe4#
      • 1...Bxf4
        • 2.Qh3#
      • 1...Bxg7
        • 2.Qg5#
      • 1...Rd1
        • 2.Qe4#
      • 1...Rd2
        • 2.Qe4#
      • 1...Rd3
        • 2.Qe4#
      • 1...Re4
        • 2.Qxe4#
      • 1...Rd5
        • 2.Qe4#
      • 1...Rd6
        • 2.Qe4#
      • 1...Bg5
        • 2.Qxg5#
      • 1...Se7
        • 2.Rf6#
      • 1...h4
        • 2.Qg4#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • R(c);N_GUARD::QAB1(B)
    • R(c);N_GUARD::QAB1(B),XR(c)
    • R(c);N_GUARD,P_SPINR(c),SBLOCK,XP(C)::QAR2(B)
    • R(c);N_GUARD,P_PINP(G),XS(F)::QAB1(B)
    • B(f);P_SPINB(f),SBLOCK,XP(C)::QAB(B)
    • B(f);N_GUARD::R1(E),XB(f)
    • B(f);N_GUARD,XP(G)::R1(E)
    • S(g);CHECK,N_GUARD::R1(E),XS(g)
    • S(g);N_GUARD::R1(E)
    • P(e);N_GUARD::QAB1(B)
  • Tries
    • Try
      • Q(B);CHECK,XP(e)
      • Vars
        • B(f);N_GUARD,P_SPINB(f)::QAR1(B),XB(f)
      • Refutation
        • K(d);P-FLIGHT,XP(C)
    • Try
      • Q(B);
      • Threat
        • QAR1(B)
      • Vars
        • B(f);N_GUARD,XP(G)::R1(E)
        • B(f);N_GUARD::R1(E),XB(f)
        • R(c);N_GUARD::QAB1(B),XR(c)
        • R(c);N_GUARD::QAB1(B)
      • Refutation
        • S(g);CHECK
  • Actual
    • Q(B);
    • Vars
      • S(g);CHECK,N_GUARD::R1(E),XS(g)
      • K(d);OGATEB,P-FLIGHT,XP(C)::QAR2(B)
      • R(c);N_GUARD,SBLOCK,XP(C)::QAR2(B)
      • R(c);N_GUARD,P_PINP(G),XS(F)::QAB1(B)
      • B(f);SBLOCK,XP(C)::QAB(B)
      • B(f);N_GUARD,XP(G)::QAR1(B)
      • R(c);N_GUARD::QAB1(B)
      • R(c);N_GUARD::QAB1(B),XR(c)
      • B(f);N_GUARD::QAR1(B),XB(f)
      • S(g);N_GUARD::R1(E)
      • P(e);N_GUARD::QAB1(B)
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