MESON Chess Problem Database

Problem Display
PID: 203396 (8/3p4/2nB3R/pQ2bkpp/K1p3rp/2N1p2B/1p3nN1/5R2 w - - 0 1)

Takacs, Peter

HM., Grantham Journal, 1924

8/3p4/2nB3R/pQ2bkpp/K1p3rp/2N1p2B/1p3nN1/5R2

#2

8 + 13

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Sb4
      • 2.Qxd7#
      • 2.Qxe5#
    • 1...Sd4
      • 2.Qxe5#
    • 1...Sa7
      • 2.Qxd7#
      • 2.Qxe5#
    • 1...Se7
      • 2.Qxd7#
      • 2.Qxe5#
    • 1...Sb8
      • 2.Qxe5#
    • 1...Sd8
      • 2.Qxe5#
    • 1...b1Q
      • 2.Qxb1#
    • 1...b1S
      • 2.Qxb1#
    • 1...b1B
      • 2.Qxb1#
    • 1...b1R
      • 2.Qxb1#
    • 1...e2
      • 2.Rxf2#
  • Tries
    • 1.Ka3?
      • 1...b1S+
        • 2.Qxb1#
      • 1...b1Q
        • 2.Qxb1#
      • 1...b1B
        • 2.Qxb1#
      • 1...b1R
        • 2.Qxb1#
      • 1...Sb4
        • 2.Qxd7#
        • 2.Qxe5#
      • 1...Sd4
        • 2.Qxe5#
      • 1...Sa7
        • 2.Qxd7#
        • 2.Qxe5#
      • 1...Se7
        • 2.Qxd7#
        • 2.Qxe5#
      • 1...Sb8
        • 2.Qxe5#
      • 1...Sd8
        • 2.Qxe5#
      • 1...e2
        • 2.Rxf2#
      • 1...a4!
    • 1.Be7?
      • threat
        • 2.Rf6#
      • 1...Sxe7
        • 2.Qxd7#
      • 1...d5!
    • 1.Qxc6?
      • threat
        • 2.Qe4#
        • 2.Qxd7#
      • 1...Bxc3
        • 2.Sxe3#
        • 2.Qf3#
      • 1...Bxd6
        • 2.Qe4#
      • 1...b1Q
        • 2.Qxd7#
      • 1...b1B
        • 2.Qxd7#
      • 1...Bf4
        • 2.Qxd7#
      • 1...dxc6!
  • Keys
    • 1.Qxc4!
      • threat
        • 2.Sxe3#
        • 2.Qe4#
      • 1...Bxc3
        • 2.Sxe3#
      • 1...Bxd6
        • 2.Qe4#
      • 1...b1Q
        • 2.Sxe3#
      • 1...b1B
        • 2.Sxe3#
      • 1...Bd4
        • 2.Qd3#
      • 1...Bf4
        • 2.Qf7#
      • 1...Sd4
        • 2.Qd3#
      • 1...e2
        • 2.Se3#
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = BLOCK_THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 4
    • REMOVED MATES = 5
  • Sets
    • S(l);N_GUARD::QAR1(F),XB(h)
    • P(a);OGATE::QAB(F),XQ(a)
    • P(a);OGATE::QAB(F),XS(a)
    • P(a);OGATE::QAB(F),XB(a)
    • P(a);OGATE::QAB(F),XR(a)
    • P(c);N_GUARD::R(A),XS(b)
  • Tries
    • Try
      • K(E);P-FLIGHT
      • Vars
        • P(a);CHECK,OGATE::QAB(F),XS(a)
        • P(a);OGATE::QAB(F),XQ(a)
        • P(a);OGATE::QAB(F),XB(a)
        • P(a);OGATE::QAB(F),XR(a)
        • S(l);N_GUARD::QAR1(F),XB(h)
        • P(c);N_GUARD::R(A),XS(b)
      • Refutation
        • P(g);
    • Try
      • B(G);
      • Threat
        • R1(H)
      • Vars
        • S(l);OGATE,XB(G)::QAB(F),XP(m)
      • Refutation
        • P(m);N_SPINB(h)
    • Try
      • Q(F);N_PINB(h),XS(l)
      • Threat
        • DUALS(2)
      • Vars
        • B(h);XB(G)::QAB1(F)
        • P(a);::QAB(F),XP(m)
        • B(h);N_SPINS(b)::QAB(F),XP(m)
      • Refutation
        • P(m);XQ(F)
  • Actual
    • Q(F);N_PINB(h),P_SPINQ(F),XP(d)
    • Threat
      • DUALS(2)
    • Vars
      • B(h);XS(C)::S(B),XP(c)
      • B(h);XB(G)::QAB1(F)
      • P(a);::S(B),XP(c)
      • B(h);N_PINQ(F)::QAB(F)
      • B(h);N_PINQ(F),N_SPINS(b)::QAR2(F)
      • S(l);N_PINQ(F)::QAB(F)
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