MESON Chess Problem Database

Problem Display
PID: 50788 (8/8/2p5/2P5/1pQP4/2pP3p/1Pk3pR/R3K3 w Q - 0 1)

Gruber, Bratoljub

Mat Plus, 1995

8/8/2p5/2P5/1pQP4/2pP3p/1Pk3pR/R3K3

#2

8 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Kxb2
      • 2.Qa2#
    • 1...b3
      • 2.Qxc3#
  • Tries
    • 1.Kf2?
      • 1...g1Q+
        • 2.Kxg1#
      • 1...g1B+
        • 2.Kxg1#
      • 1...Kxb2
        • 2.Qa2#
      • 1...g1S
        • 2.Kxg1#
      • 1...g1R
        • 2.Kxg1#
      • 1...b3
        • 2.Qxc3#
      • 1...Kd2!
    • 1.Rd1?
      • 1...b3
        • 2.Qxc3#
      • 1...Kxb2!
    • 1.Qa2?
      • 1...cxb2
        • 2.Qc4#
      • 1...b3
        • 2.Qb1#
      • 1...Kxd3!
    • 1.Qxb4?
      • threat
        • 2.Qxc3#
      • 1...cxb2
        • 2.Qc4#
      • 1...Kxd3!
    • 1.d5?
      • 1...Kxb2
        • 2.Qa2#
      • 1...b3
        • 2.Qxc3#
      • 1...cxd5!
  • Keys
    • 1.Qe6!
      • 1...Kxb2
        • 2.Qa2#
      • 1...Kxd3
        • 2.0-0-0#
      • 1...cxb2
        • 2.Qc4#
      • 1...b3
        • 2.Qe2#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(a);OGATEB,P-FLIGHT,XP(C)::QAR1(F)
    • P(e);N_GUARD::QAR1(F),XP(c)
  • Tries
    • Try
      • K(B);N_PINP(b),P_PINP(c),S_FLIGHT
      • Vars
        • P(b);CHECK::R(D)+K(B),XQ(b)
        • P(b);CHECK::R(D)+K(B),XB(b)
        • K(a);N_SPINP(c),OGATEB,P-FLIGHT,XP(C)::QAR1(F)
        • P(b);::R(D)+K(B),XS(b)
        • P(b);::R(D)+K(B),XR(b)
        • P(e);N_GUARD::QAR1(F),XP(c)
      • Refutation
        • K(a);N_SPINP(c),P-FLIGHT
    • Try
      • R(A);
      • Vars
        • P(e);N_GUARD::QAR1(F),XP(c)
      • Refutation
        • K(a);P-FLIGHT,XP(C)
    • Try
      • Q(F);
      • Vars
        • P(c);N_SPINP(b),OGATEB,P_SPINP(c),SBLOCK,XP(C)::QAR2(F)
        • P(e);SBLOCK::QAB1(F)
      • Refutation
        • K(a);N_SPINP(b),S_FLIGHT,XP(E)
    • Try
      • Q(F);XP(e)
      • Threat
        • QAR1(F),XP(c)
      • Vars
        • P(c);OGATEB,SBLOCK,XP(C)::QAR2(F)
      • Refutation
        • K(a);N_SPINP(b),S_FLIGHT,XP(E)
    • Try
      • P(G);
      • Vars
        • K(a);OGATEB,P-FLIGHT,XP(C)::QAR1(F)
        • P(e);N_GUARD::QAR1(F),XP(c)
      • Refutation
        • P(f);XP(G)
  • Actual
    • Q(F);
    • Vars
      • K(a);OGATEB,P-FLIGHT,XP(C)::QAR1(F)
      • K(a);N_SPINP(b),S_FLIGHT,XP(E)::0-0-0
      • P(c);OGATEB,SBLOCK,XP(C)::QAR2(F)
      • P(e);SBLOCK::QAR2(F)
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