MESON Chess Problem Database

Problem Display
PID: 30953 (4RN2/3pK2p/8/1Q4p1/4kqbR/4P3/4PbP1/8 w - - 0 1)

Kipping, Cyril Stanley

Rice, William Bayard

The Problemist, 1927

4RN2/3pK2p/8/1Q4p1/4kqbR/4P3/4PbP1/8

#2

8 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Kxe3
      • 2.Qd3#
    • 1...Qd6+
      • 2.Kxd6#
    • 1...Qf3
      • 2.Kd6#
      • 2.Kd8#
    • 1...Qf6+
      • 2.Kxf6#
    • 1...Qf7+
      • 2.Kxf7#
    • 1...Qxf8+
      • 2.Kxf8#
    • 1...Bxe2
      • 2.Kxd7#
      • 2.Kd8#
    • 1...Bf3
      • 2.Kxd7#
      • 2.Kd8#
  • Tries
    • 1.Kd8+?
      • 1...Qe5
        • 2.Rxe5#
        • 2.Qd3#
        • 2.Qxe5#
      • 1...Be6!
    • 1.Sg6?
      • threat
        • 2.Qd3#
      • 1...Qe5+
        • 2.Qxe5#
      • 1...Qd6+
        • 2.Kxd6#
      • 1...Qf6+
        • 2.Kxf6#
      • 1...Qf7+
        • 2.Kxf7#
      • 1...Qf8+
        • 2.Kxf8#
      • 1...Kxe3
        • 2.Qd3#
      • 1...Qxe3
        • 2.Qe5#
      • 1...Bxe2
        • 2.Kxd7#
        • 2.Kd8#
      • 1...hxg6!
    • 1.Qd5+?
      • 1...Kxe3
        • 2.Qd3#
      • 1...Kxd5!
  • Keys
    • 1.Sxd7!
      • threat
        • 2.Qd3#
      • 1...Qe5+
        • 2.Qxe5#
      • 1...Qd6+
        • 2.Kxd6#
      • 1...Qf6+
        • 2.Kxf6#
      • 1...Qf7+
        • 2.Kxf7#
      • 1...Qf8+
        • 2.Kxf8#
      • 1...Kxe3
        • 2.Qd3#
      • 1...Qxe3
        • 2.Qe5#
      • 1...Bxe2
        • 2.Kd8#
      • 1...Bxd7
        • 2.Kxd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • K(b);P-FLIGHT,XP(C)::QAR1(E)
    • Q(c);CHECK,P_SPINB(d)::R(G)+K(F),XQ(c)
    • Q(c);CHECK,P_SPINB(d),XS(H)::R(G)+K(F),XQ(c)
  • Tries
    • Try
      • K(F);CHECK,S_FLIGHT
      • Refutation
        • B(d);P_SPINB(d),P_SPINQ(c)
    • Try
      • S(H);
      • Threat
        • QAB1(E)
      • Vars
        • Q(c);CHECK,N_GUARD,P_SPINB(d)::QAR1(E),XQ(c)
        • Q(c);CHECK,P_SPINB(d)::R(G)+K(F),XQ(c)
        • K(b);P-FLIGHT,XP(C)::QAR1(E)
        • Q(c);N_GUARD,P_SPINB(d),SBLOCK,XP(C)::QAR1(E)
      • Refutation
        • P(g);XS(H)
    • Try
      • Q(E);CHECK
      • Vars
        • K(b);P-FLIGHT,XP(C)::QAR1(E)
      • Refutation
        • K(b);S_FLIGHT,XQ(E)
  • Actual
    • S(H);XP(f)
    • Threat
      • QAB1(E)
    • Vars
      • Q(c);CHECK,N_GUARD,P_SPINB(d)::QAR1(E),XQ(c)
      • Q(c);CHECK,P_SPINB(d)::R(G)+K(F),XQ(c)
      • K(b);P-FLIGHT,XP(C)::QAR1(E)
      • Q(c);N_GUARD,P_SPINB(d),SBLOCK,XP(C)::QAR1(E)
      • B(d);N_GUARD,P_SPINQ(c),XP(A)::R(G)+K(F)
      • B(d);P_SPINQ(c),XS(H)::R(G)+K(F),XB(d)
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