MESON Chess Problem Database

Problem Display
PID: 165626 (4BB2/1p6/nr1rNQPn/1N1k3q/1b2pPpp/1Pp2P2/2P5/3K4 w - - 0 1)

Anonymous

British Chess Magazine 15. (Healey MT) Ty., 1909-1910

4BB2/1p6/nr1rNQPn/1N1k3q/1b2pPpp/1Pp2P2/2P5/3K4

#2

11 + 12

SOLUTION

  • SOUND
  • Sets
    • 1...Qxg6
      • 2.Qe5#
    • 1...Qe5
      • 2.Qxe5#
    • 1...Rxe6
      • 2.Qd4#
    • 1...Ba3
      • 2.Sxc3#
    • 1...Bc5
      • 2.Sxc3#
    • 1...Sc5
      • 2.Sbc7#
      • 2.Sec7#
    • 1...Sc7
      • 2.Sbxc7#
    • 1...Sb8
      • 2.Sbc7#
    • 1...Sf5
      • 2.Qe5#
  • Tries
    • 1.Sg5?
      • threat
        • 2.Qd4#
        • 2.Qe5#
      • 1...Kc5+
        • 2.Qd4#
      • 1...Rxb5
        • 2.Qe5#
      • 1...Rxf6
        • 2.fxe4#
      • 1...Re6
        • 2.Qd4#
      • 1...Rd7
        • 2.fxe4#
      • 1...Bc5
        • 2.Sxc3#
        • 2.Qe5#
        • 2.fxe4#
      • 1...Sf5
        • 2.Qe5#
        • 2.Qxf5#
      • 1...Sf7
        • 2.Qd4#
      • 1...Qxg5!
    • 1.Sec7+?
      • 1...Kc5+
        • 2.Qd4#
      • 1...Sxc7!
    • 1.Bd7?
      • threat
        • 2.Qd4#
      • 1...Qe5
        • 2.Qxe5#
      • 1...Bc5
        • 2.Sxc3#
      • 1...Sf5
        • 2.Qe5#
      • 1...Rxd7!
  • Keys
    • 1.Sc5!
      • threat
        • 2.Qd4#
      • 1...Kxc5+
        • 2.Qd4#
      • 1...Rxb5
        • 2.Qxd6#
      • 1...Rxf6
        • 2.fxe4#
      • 1...Bxc5
        • 2.Sxc3#
      • 1...Sxc5
        • 2.Sc7#
      • 1...Qe5
        • 2.Qxe5#
      • 1...Rd7
        • 2.fxe4#
      • 1...Sf5
        • 2.Qe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 5
  • Sets
    • Q(g);N_GUARD,XP(I)::QAR1(H)
    • Q(g);N_GUARD::QAR1(H),XQ(g)
    • R(j);SBLOCK,XS(G)::QAR1(H)
    • B(b);N_GUARD::S(F),XP(a)
    • S(h);N_GUARD::S(F),XS(h)
    • S(h);N_GUARD::S(F)
    • S(k);S_CUTQ(g)::QAR1(H)
  • Tries
    • Try
      • S(G);
      • Threat
        • DUALS(2)
      • Vars
        • K(f);CHECK,P-FLIGHT,P_SPINR(j)::QAB1(H)
        • R(i);XS(F)::QAR1(H)
        • R(j);XQ(H)::P(D),XP(c)
        • R(j);::QAR1(H)
        • R(j);::P(D),XP(c)
        • S(k);::QAR1(H)
      • Refutation
        • Q(g);XS(G)
    • Try
      • S(G);CHECK
      • Vars
        • K(f);CHECK,P-FLIGHT,P_SPINR(j)::QAB1(H)
      • Refutation
        • S(h);XS(G)
    • Try
      • B(J);
      • Threat
        • QAR1(H)
      • Vars
        • Q(g);N_GUARD::QAR1(H),XQ(g)
        • B(b);N_GUARD::S(F),XP(a)
        • S(k);S_CUTQ(g)::QAR1(H)
      • Refutation
        • R(j);XB(J)
  • Actual
    • S(G);
    • Threat
      • QAR1(H)
    • Vars
      • K(f);CHECK,P-FLIGHT,P_SPINR(j),XS(G)::QAB1(H)
      • R(i);N_GUARD,XS(F)::QAR1(H),XR(j)
      • R(j);XQ(H)::P(D),XP(c)
      • B(b);N_GUARD,SBLOCK,XS(G)::S(F),XP(a)
      • S(h);N_GUARD,SBLOCK,XS(G)::S(F)
      • Q(g);N_GUARD::QAR1(H),XQ(g)
      • R(j);::P(D),XP(c)
      • S(k);S_CUTQ(g)::QAR1(H)
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