MESON Chess Problem Database

Problem Display
PID: 174811 (1n4K1/2B4p/2p1Q1p1/1r2p3/N2k2r1/nR1NpB2/4P2q/8 w - - 0 1)

Barth, Michael

6th HM., Melnichenko-60 JT, 1999

1n4K1/2B4p/2p1Q1p1/1r2p3/N2k2r1/nR1NpB2/4P2q/8

#2

8 + 11

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...c5
      • 2.Qd5#
  • Tries
    • 1.Sf4?
      • threat
        • 2.Rd3#
      • 1...Qxe2
        • 2.Sxe2#
      • 1...Rxb3
        • 2.Bxe5#
      • 1...e4
        • 2.Qxe4#
      • 1...Rd5!
    • 1.Sdc5?
      • threat
        • 2.Rd3#
      • 1...Qxe2
        • 2.Bxe5#
      • 1...Rxb3
        • 2.Sxb3#
      • 1...e4!
    • 1.Bb6+?
      • 1...Rc5
        • 2.Bxc5#
      • 1...c5
        • 2.Qd5#
      • 1...Rxb6!
    • 1.Rb4+?
      • 1...Sc4
        • 2.Rxc4#
        • 2.Qxc4#
      • 1...Rxb4!
    • 1.Qxg4+?
      • 1...e4
        • 2.Qxe4#
      • 1...Qf4!
    • 1.Qd6+?
      • 1...Kc4
        • 2.Rc3#
      • 1...Rd5!
  • Keys
    • 1.Sxe5!
      • threat
        • 2.Rd3#
      • 1...Qxe2
        • 2.Qxg4#
      • 1...Rxb3
        • 2.Qd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • P(h);N_GUARD,S_CUTR(f)::QAR1(F)
  • Tries
    • Try
      • S(C);
      • Threat
        • R1(B)
      • Vars
        • Q(a);XP(A)::S(C),XQ(a)
        • R(f);N_GUARD,XR(B)::B(G),XP(g)
        • P(g);OGATE::QAR1(F),XP(g)
      • Refutation
        • R(f);
    • Try
      • S(C);
      • Threat
        • R1(B)
      • Vars
        • Q(a);N_GUARD,XP(A)::B(G),XP(g)
        • R(f);XR(B)::S(C),XR(f)
      • Refutation
        • P(g);
    • Try
      • B(G);CHECK
      • Vars
        • R(f);N_GUARD,P_SPINR(f)::B(G),XR(f)
        • P(h);P_SPINP(h)::QAR1(F)
      • Refutation
        • R(f);XB(G)
    • Try
      • R(B);CHECK
      • Refutation
        • R(f);XR(B)
    • Try
      • Q(F);CHECK,XR(e)
      • Vars
        • P(g);P_SPINP(g)::QAR1(F),XP(g)
      • Refutation
        • Q(a);P_SPINQ(a)
    • Try
      • Q(F);CHECK
      • Vars
        • K(d);P-FLIGHT::R1(B)
      • Refutation
        • R(f);P_SPINR(f)
  • Actual
    • S(C);XP(g)
    • Threat
      • R1(B)
    • Vars
      • Q(a);N_GUARD,XP(A)::QAR(F),XR(e)
      • R(f);N_GUARD,XR(B)::QAR2(F)
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