MESON Chess Problem Database

Problem Display
PID: 226811 (8/3p4/3Q1N2/q2p2K1/P2k4/4N1R1/2P5/4B3 w - - 0 1)

Bakcsi, Gyorgy

Freie Presse, 1996

8/3p4/3Q1N2/q2p2K1/P2k4/4N1R1/2P5/4B3

#2

8 + 4

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Qc3
      • 2.Qxd5#
    • 1...Qb4
      • 2.Qxd5#
    • 1...Qb6
      • 2.Qxd5#
    • 1...Qc7
      • 2.Qxd5#
    • 1...Qd8
      • 2.Qxd5#
    • 1...Qxa4
      • 2.Qxd5#
    • 1...Qc5
      • 2.Qf4#
    • 1...Qa6
      • 2.Qxd5#
    • 1...Qa7
      • 2.Qxd5#
  • Tries
    • 1.Sexd5?
      • threat
        • 2.Rg4#
      • 1...Qxd5+
        • 2.Qxd5#
      • 1...Kc4
        • 2.Rg4#
      • 1...Qxe1
        • 2.Sb6#
      • 1...Qd2+!
    • 1.Sxd7?
      • threat
        • 2.Qf4#
        • 2.Qe5#
      • 1...Ke4
        • 2.Qf4#
        • 2.Qe5#
      • 1...Qxe1
        • 2.Qe5#
      • 1...Qd2
        • 2.Qe5#
      • 1...Qc7
        • 2.Qxd5#
      • 1...Qd8+!
    • 1.Bc3+?
      • 1...Qxc3
        • 2.Qxd5#
      • 1...Kxc3!
    • 1.Bb4?
      • threat
        • 2.Qf4#
      • 1...Qc7
        • 2.Qxd5#
      • 1...Qxb4!
    • 1.c3+?
      • 1...Qxc3
        • 2.Qxd5#
      • 1...Kd3!
  • Keys
    • 1.Sfxd5!
      • threat
        • 2.Rg4#
      • 1...Qd8+
        • 2.Sf6#
      • 1...Qxd5+
        • 2.Qxd5#
      • 1...Ke4
        • 2.Qf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 8
  • Sets
    • Q(b);N_GUARD::QAR1(G),XP(c)
    • Q(b);N_GUARD,P_PINS(H)::QAR1(G),XP(c)
    • Q(b);N_GUARD,XP(E)::QAR1(G),XP(c)
    • Q(b);SBLOCK::QAR2(G)
  • Tries
    • Try
      • S(C);P_SPINS(C),XP(c)
      • Threat
        • R(D)
      • Vars
        • Q(b);CHECK,OGATE,P_SPINQ(b),XS(C)::QAR1(G),XQ(b)
        • K(a);P-FLIGHT::R(D)
        • Q(b);N_PINS(C),XB(A)::QAR(G)+S(C)
      • Refutation
        • Q(b);CHECK,N_PINS(C)
    • Try
      • S(H);XP(d)
      • Threat
        • DUALS(2)
      • Vars
        • Q(b);XB(A)::QAB1(G)
        • Q(b);P_PINS(C)::QAB1(G)
        • Q(b);N_GUARD::QAR1(G),XP(c)
      • Refutation
        • Q(b);CHECK
    • Try
      • B(A);CHECK
      • Vars
        • Q(b);SBLOCK,XB(A)::QAR1(G),XP(c)
      • Refutation
        • K(a);N_SPINP(c),S_FLIGHT,XB(A)
    • Try
      • B(A);
      • Threat
        • QAR2(G)
      • Vars
        • Q(b);N_GUARD::QAR1(G),XP(c)
      • Refutation
        • Q(b);XB(A)
    • Try
      • P(B);CHECK
      • Vars
        • Q(b);XP(B)::QAR1(G),XP(c)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • S(H);P_SPINS(H),XP(c)
    • Threat
      • R(D)
    • Vars
      • Q(b);CHECK,N_PINS(H)::QAR(G)+S(H)
      • Q(b);CHECK,OGATE,P_SPINQ(b),XS(H)::QAR1(G),XQ(b)
      • K(a);P-FLIGHT::QAR1(G)
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