MESON Chess Problem Database

Problem Display
PID: 16295 (2R1R3/8/8/3Q4/6p1/p2p2K1/3pb3/3k1N2 w - - 0 1)

Subotic, Miroslav

The Problemist, 2000

2R1R3/8/8/3Q4/6p1/p2p2K1/3pb3/3k1N2

#2

5 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Bxf1
      • 2.Qb3#
    • 1...Bf3
      • 2.Qb3#
  • Tries
    • 1.Kf2?
      • threat
        • 2.Se3#
        • 2.Qb3#
      • 1...Bxf1
        • 2.Qb3#
      • 1...g3+!
    • 1.Sh2?
      • 1...Ke1
        • 2.Qh1#
      • 1...Bf1
        • 2.Qb3#
      • 1...Bf3
        • 2.Qb3#
      • 1...a2!
    • 1.Qh1?
      • threat
        • 2.Se3#
      • 1...Ke1
        • 2.Sh2#
      • 1...Bxf1
        • 2.Qxf1#
      • 1...Bf3!
    • 1.Qa2?
      • threat
        • 2.Qb1#
        • 2.Qa1#
        • 2.Qxd2#
      • 1...Bxf1
        • 2.Qb1#
        • 2.Qb3#
        • 2.Qa1#
      • 1...Ke1!
    • 1.Qxd3?
      • threat
        • 2.Qb1#
        • 2.Qxe2#
        • 2.Qxd2#
      • 1...Ke1
        • 2.Qxe2#
      • 1...Bxf1
        • 2.Qb1#
        • 2.Qxf1#
        • 2.Qc2#
        • 2.Qb3#
      • 1...a2
        • 2.Qxe2#
        • 2.Qxd2#
      • 1...Bf3
        • 2.Qb1#
        • 2.Qc2#
        • 2.Qxd2#
        • 2.Qb3#
      • 1...Bxd3!
  • Keys
    • 1.Qa5!
      • threat
        • 2.Qxd2#
      • 1...Ke1
        • 2.Rc1#
      • 1...Bxf1
        • 2.Qa4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • B(c);XS(A)::QAB(C)
    • B(c);::QAB(C)
  • Tries
    • Try
      • K(B);S_FLIGHT
      • Threat
        • DUALS(2)
      • Vars
        • B(c);XS(A)::QAB(C)
      • Refutation
        • P(f);CHECK
    • Try
      • S(A);
      • Vars
        • K(a);P-FLIGHT,P_SPINB(c)::QAR(C)
        • B(c);::QAB(C)
      • Refutation
        • P(d);
    • Try
      • Q(C);
      • Threat
        • QAR(C)+S(A),DCHECK
      • Vars
        • K(a);P-FLIGHT,P_SPINB(c)::QAR(C)+S(A)
        • B(c);OGATE,P_SPINB(c),XS(A)::QAR2(C),XB(c)
      • Refutation
        • B(c);
    • Try
      • Q(C);
      • Threat
        • DUALS(3)
      • Refutation
        • K(a);P-FLIGHT,P_SPINB(c)
    • Try
      • Q(C);P_PINP(b),XP(e)
      • Threat
        • DUALS(3)
      • Vars
        • K(a);N_SPINP(b),P-FLIGHT,P_SPINB(c)::QAR1(C),XB(c)
      • Refutation
        • B(c);N_SPINP(b),XQ(C)
  • Actual
    • Q(C);
    • Threat
      • QAR1(C),XP(b)
    • Vars
      • K(a);P-FLIGHT,P_SPINB(c),P_SPINP(b)::R(D)
      • B(c);XS(A)::QAB(C)
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