MESON Chess Problem Database

Problem Display
PID: 199445 (2br1B2/q1N5/p4N2/Q7/PpkP2R1/5R2/2n1P3/2K2B2 w - - 0 1)

Zalokotsky, Roman Fedorovich (aka Fedorovich, Roman)

Phenix, 1993

2br1B2/q1N5/p4N2/Q7/PpkP2R1/5R2/2n1P3/2K2B2

#2

11 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Qxd4
      • 2.Qc5#
    • 1...Qc5
      • 2.Qxc5#
    • 1...Qb8
      • 2.Qc5#
    • 1...Qb7
      • 2.Qc5#
    • 1...Qxc7
      • 2.Qxc7#
    • 1...Qa8
      • 2.Qc5#
    • 1...Rxd4
      • 2.Qd5#
    • 1...Rd5
      • 2.Qxd5#
    • 1...Re8
      • 2.Qd5#
    • 1...Rxf8
      • 2.Qd5#
    • 1...Bd7
      • 2.Qd5#
    • 1...Sa1
      • 2.Qxb4#
    • 1...Se1
      • 2.Qxb4#
    • 1...Sa3
      • 2.Qxb4#
    • 1...Se3
      • 2.Qxb4#
    • 1...Sxd4
      • 2.Qxb4#
    • 1...b3
      • 2.Rc3#
      • 2.Qc3#
      • 2.e3#
  • Tries
    • 1.Se6?
      • threat
        • 2.e4#
      • 1...Qxd4
        • 2.Qc7#
        • 2.Qc5#
      • 1...Rxd4
        • 2.Qd5#
      • 1...Sxd4
        • 2.Qxb4#
      • 1...Se3
        • 2.Qxb4#
      • 1...Se1
        • 2.Qxb4#
      • 1...Bxe6!
    • 1.Bc5?
      • threat
        • 2.e4#
      • 1...Qxc5
        • 2.Qxc5#
      • 1...Sxd4
        • 2.Qxb4#
      • 1...Se3
        • 2.Qxb4#
      • 1...Se1
        • 2.Qxb4#
      • 1...Rxd4!
    • 1.d5+?
      • 1...Qd4
        • 2.Qc5#
      • 1...Sd4
        • 2.Qxb4#
      • 1...Bxg4!
  • Keys
    • 1.Sb5!
      • threat
        • 2.e4#
      • 1...Qxd4
        • 2.Qc7#
      • 1...Rxd4
        • 2.Sd6#
      • 1...Sxd4
        • 2.Qxb4#
      • 1...axb5
        • 2.Qxb5#
      • 1...Se3
        • 2.Qxb4#
      • 1...Se1
        • 2.Qxb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 11
  • Sets
    • Q(e);N_GUARD,P_SPINQ(e),XP(F)::QAR1(H)
    • Q(e);N_GUARD::QAR1(H),XQ(e)
    • Q(e);N_GUARD::QAR1(H)
    • Q(e);OGATE,XS(J)::QAR(H),XQ(e)
    • R(g);N_GUARD,P_SPINR(g),XP(F)::QAB1(H)
    • R(g);N_GUARD::QAB1(H),XR(g)
    • R(g);N_GUARD::QAB1(H)
    • R(g);N_GUARD,XB(K)::QAB1(H)
    • B(f);S_CUTR(g)::QAB1(H)
    • S(a);N_GUARD::QAR1(H),XP(b)
    • S(a);N_GUARD,P_SPINS(a),XP(F)::QAR1(H),XP(b)
  • Tries
    • Try
      • S(J);
      • Threat
        • B(B)+P(C)
      • Vars
        • R(g);N_GUARD,P_SPINR(g),XP(F)::QAB1(H)
        • S(a);N_GUARD,P_SPINS(a),XP(F)::QAR1(H),XP(b)
        • S(a);N_GUARD::QAR1(H),XP(b)
      • Refutation
        • B(f);XS(J)
    • Try
      • B(K);
      • Threat
        • B(B)+P(C)
      • Vars
        • Q(e);OGATE,XB(K)::QAR1(H),XQ(e)
        • S(a);N_GUARD,P_SPINS(a),XP(F)::QAR1(H),XP(b)
        • S(a);N_GUARD::QAR1(H),XP(b)
      • Refutation
        • R(g);P_SPINR(g),XP(F)
    • Try
      • P(F);CHECK
      • Vars
        • Q(e);P_SPINQ(e)::QAR1(H)
        • S(a);P_SPINS(a)::QAR1(H),XP(b)
      • Refutation
        • B(f);XR(G)
  • Actual
    • S(J);
    • Threat
      • B(B)+P(C)
    • Vars
      • Q(e);N_GUARD,P_SPINQ(e),XP(F)::QAR(H)
      • R(g);N_GUARD,P_SPINR(g),XP(F)::S(J)
      • S(a);N_GUARD,P_SPINS(a),XP(F)::QAR1(H),XP(b)
      • P(d);OGATE,XS(J)::QAB1(H),XP(d)
      • S(a);N_GUARD::QAR1(H),XP(b)
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