MESON Chess Problem Database

Problem Display
PID: 110165 (8/4p3/4B2p/1p4pP/1p1pk1P1/1K2pN1N/6P1/4Q3 w - - 0 1)

Labai, Zoltan

1st Comm., Sachove umeni (Ceskoslovensky sach), 1974

8/4p3/4B2p/1p4pP/1p1pk1P1/1K2pN1N/6P1/4Q3

#2

8 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kd3
      • 2.Bf5#
    • 1...e2
      • 2.Qxe2#
    • 1...d3
      • 2.Qxb4#
  • Tries
    • 1.Kxb4?
      • 1...Kd3
        • 2.Bf5#
      • 1...e2
        • 2.Qxe2#
      • 1...d3!
    • 1.Sd2+?
      • 1...Kd3
        • 2.Bf5#
      • 1...Ke5!
    • 1.Shxg5+?
      • 1...Kd3
        • 2.Se5#
        • 2.Bf5#
        • 2.Qd1#
      • 1...Kf4
        • 2.g3#
      • 1...hxg5!
    • 1.Bd5+?
      • 1...Kd3
        • 2.Se5#
        • 2.Qd1#
      • 1...Kxd5!
    • 1.Qd2?
      • threat
        • 2.Qxd4#
      • 1...d3
        • 2.Qxb4#
      • 1...exd2!
    • 1.Qg3?
      • 1...e2
        • 2.Sd2#
      • 1...d3
        • 2.Qe5#
      • 1...Kd3!
    • 1.Qa1?
      • threat
        • 2.Qxd4#
      • 1...d3
        • 2.Qd4#
        • 2.Qe5#
        • 2.Qa8#
      • 1...Kd3!
    • 1.Qf1?
      • 1...e2
        • 2.Qxe2#
      • 1...d3!
  • Keys
    • 1.Qc1!
      • 1...Kd3
        • 2.Qc2#
      • 1...d3
        • 2.Qc6#
      • 1...e2
        • 2.Sf2#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 3
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • K(d);N_SPINP(a),S_FLIGHT::B(H)
    • P(a);OGATEB::QAR2(A),XP(a)
    • P(c);OGATEB,SBLOCK::QAR(A),XP(b)
  • Tries
    • Try
      • K(C);P-FLIGHT,XP(b)
      • Vars
        • K(d);N_SPINP(a),S_FLIGHT::B(H)
        • P(a);OGATEB::QAR2(A),XP(a)
      • Refutation
        • P(c);
    • Try
      • S(D);CHECK
      • Vars
        • K(d);N_SPINP(a),S_FLIGHT::B(H)
      • Refutation
        • K(d);P-FLIGHT
    • Try
      • S(E);CHECK,XP(f)
      • Vars
        • K(d);N_SPINP(a),P-FLIGHT::P(B)
      • Refutation
        • P(g);XS(E)
    • Try
      • B(H);CHECK
      • Refutation
        • K(d);N_SPINP(a),S_FLIGHT,XB(H)
    • Try
      • Q(A);N_PINP(a)
      • Threat
        • QAR1(A),XP(c)
      • Vars
        • P(c);OGATEB,SBLOCK::QAR(A),XP(b)
      • Refutation
        • P(a);XQ(A)
    • Try
      • Q(A);N_PINP(a)
      • Vars
        • P(a);N_GUARD::S(D)
        • P(c);SBLOCK::QAR1(A)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • Q(A);N_PINP(a)
      • Threat
        • QAR1(A),XP(c)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • Q(A);N_PINP(a)
      • Vars
        • P(a);OGATEB::QAR2(A),XP(a)
      • Refutation
        • P(c);
  • Actual
    • Q(A);N_PINP(a)
    • Vars
      • K(d);S_FLIGHT::QAB1(A)
      • P(c);SBLOCK::QAB(A)
      • P(a);N_GUARD::S(E)
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