MESON Chess Problem Database

Problem Display
PID: 87638 (8/8/Q7/4p1p1/4R1N1/4Pp1k/5PNP/4K3 w - - 0 1)

Mantha, Srinivas

The Problemist, 1992

8/8/Q7/4p1p1/4R1N1/4Pp1k/5PNP/4K3

#2

8 + 4

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kxg2
      • 2.Qf1#
    • 1...fxg2
      • 2.Qh6#
  • Tries
    • 1.Kd1?
      • 1...fxg2
        • 2.Qh6#
      • 1...Kxg2!
    • 1.Kd2?
      • 1...fxg2
        • 2.Qh6#
      • 1...Kxg2!
    • 1.Ra4?
      • 1...Kxg2
        • 2.Qf1#
      • 1...fxg2
        • 2.Qh6#
      • 1...e4!
    • 1.Rb4?
      • 1...Kxg2
        • 2.Qf1#
      • 1...fxg2
        • 2.Qh6#
      • 1...e4!
    • 1.Qd3?
      • 1...Kxg2
        • 2.Qf1#
      • 1...fxg2!
    • 1.Qc4?
      • 1...Kxg2
        • 2.Qf1#
      • 1...fxg2!
    • 1.Qb5?
      • 1...Kxg2
        • 2.Qf1#
      • 1...fxg2!
    • 1.Qb7?
      • 1...fxg2
        • 2.Qh7#
      • 1...Kxg2!
    • 1.Qc8?
      • 1...fxg2
        • 2.Qh8#
      • 1...Kxg2!
    • 1.Qb6?
      • 1...fxg2
        • 2.Qh6#
      • 1...Kxg2!
    • 1.Qc6?
      • 1...fxg2
        • 2.Qh6#
      • 1...Kxg2!
    • 1.Qd6?
      • 1...fxg2
        • 2.Qh6#
      • 1...Kxg2!
    • 1.Qe6?
      • 1...fxg2
        • 2.Qh6#
      • 1...Kxg2!
    • 1.Qf6?
      • threat
        • 2.Qxf3#
      • 1...fxg2
        • 2.Qh8#
        • 2.Qh6#
      • 1...Kxg2!
    • 1.Qg6?
      • 1...fxg2
        • 2.Qh5#
        • 2.Qh7#
        • 2.Qh6#
      • 1...Kxg2!
    • 1.Qa7?
      • 1...fxg2
        • 2.Qh7#
      • 1...Kxg2!
    • 1.Qa8?
      • 1...fxg2
        • 2.Qh8#
      • 1...Kxg2!
  • Keys
    • 1.Sh4!
      • 1...Kxh4
        • 2.Qh6#
      • 1...gxh4
        • 2.Qf1#

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • K(b);OGATEB,S_FLIGHT,XS(C)::QAB1(H)
    • P(a);SBLOCK,XS(C)::QAR(H)
  • Tries
    • Try
      • K(A);P-FLIGHT
      • Vars
        • P(a);SBLOCK,XS(C)::QAR(H)
      • Refutation
        • K(b);S_FLIGHT,XS(C)
    • Try
      • K(A);S_FLIGHT
      • Vars
        • P(a);SBLOCK,XS(C)::QAR(H)
      • Refutation
        • K(b);S_FLIGHT,XS(C)
    • Try
      • R(F);
      • Vars
        • K(b);OGATEB,S_FLIGHT,XS(C)::QAB1(H)
        • P(a);SBLOCK,XS(C)::QAR(H)
      • Refutation
        • P(c);
    • Try
      • R(F);
      • Vars
        • K(b);OGATEB,S_FLIGHT,XS(C)::QAB1(H)
        • P(a);SBLOCK,XS(C)::QAR(H)
      • Refutation
        • P(c);
    • Try
      • Q(H);
      • Vars
        • K(b);OGATEB,S_FLIGHT,XS(C)::QAB1(H)
      • Refutation
        • P(a);XS(C)
    • Try
      • Q(H);
      • Vars
        • K(b);OGATEB,S_FLIGHT,XS(C)::QAB1(H)
      • Refutation
        • P(a);XS(C)
    • Try
      • Q(H);
      • Vars
        • K(b);OGATEB,S_FLIGHT,XS(C)::QAB1(H)
      • Refutation
        • P(a);XS(C)
    • Try
      • Q(H);
      • Vars
        • P(a);SBLOCK,XS(C)::QAR(H)
      • Refutation
        • K(b);S_FLIGHT,XS(C)
    • Try
      • Q(H);
      • Vars
        • P(a);SBLOCK,XS(C)::QAR(H)
      • Refutation
        • K(b);S_FLIGHT,XS(C)
    • Try
      • Q(H);
      • Vars
        • P(a);SBLOCK,XS(C)::QAR(H)
      • Refutation
        • K(b);S_FLIGHT,XS(C)
    • Try
      • Q(H);
      • Vars
        • P(a);SBLOCK,XS(C)::QAR(H)
      • Refutation
        • K(b);S_FLIGHT,XS(C)
    • Try
      • Q(H);
      • Vars
        • P(a);SBLOCK,XS(C)::QAR(H)
      • Refutation
        • K(b);S_FLIGHT,XS(C)
    • Try
      • Q(H);
      • Vars
        • P(a);SBLOCK,XS(C)::QAR(H)
      • Refutation
        • K(b);S_FLIGHT,XS(C)
    • Try
      • Q(H);
      • Threat
        • QAR2(H),XP(a)
      • Refutation
        • K(b);S_FLIGHT,XS(C)
    • Try
      • Q(H);
      • Refutation
        • K(b);S_FLIGHT,XS(C)
    • Try
      • Q(H);
      • Vars
        • P(a);SBLOCK,XS(C)::QAR(H)
      • Refutation
        • K(b);S_FLIGHT,XS(C)
    • Try
      • Q(H);
      • Vars
        • P(a);SBLOCK,XS(C)::QAR(H)
      • Refutation
        • K(b);S_FLIGHT,XS(C)
  • Actual
    • S(C);
    • Vars
      • K(b);OGATEB,P-FLIGHT,XS(C)::QAR2(H)
      • P(d);SBLOCK,XS(C)::QAB(H)
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