MESON Chess Problem Database

Problem Display
PID: 229201 (r2k2NR/r3R1K1/4BNpP/P7/1Q3q2/6B1/8/8 w - - 0 1)

Kipping, Cyril Stanley

Comm., Magyar Sakkvilag, 1926

r2k2NR/r3R1K1/4BNpP/P7/1Q3q2/6B1/8/8

#2

10 + 5

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Qxh6+
      • 2.Sxh6#
    • 1...Qxf6+
      • 2.Sxf6#
    • 1...Rxe7+
      • 2.Qxe7#
  • Tries
    • 1.Rxa7?
      • threat
        • 2.Se7#
        • 2.Qe7#
        • 2.Qf8#
      • 1...Qxh6+
        • 2.Sxh6#
      • 1...Qc7+
        • 2.Se7#
        • 2.Bxc7#
      • 1...Qxf6+
        • 2.Sxf6#
      • 1...Qxb4
        • 2.Se7#
        • 2.Bc7#
      • 1...Qd6
        • 2.Se7#
        • 2.Qxd6#
      • 1...Rxa7+!
    • 1.Rb7?
      • threat
        • 2.Se7#
        • 2.Qe7#
        • 2.Qf8#
      • 1...Qxh6+
        • 2.Sxh6#
      • 1...Qc7+
        • 2.Se7#
        • 2.Bxc7#
      • 1...Qxf6+
        • 2.Sxf6#
      • 1...Qxb4
        • 2.Se7#
        • 2.Bc7#
      • 1...Qd6
        • 2.Se7#
        • 2.Qxd6#
      • 1...Rxb7+!
    • 1.Rd7+?
      • 1...Kc8
        • 2.Se7#
        • 2.Qf8#
      • 1...Rxd7+!
    • 1.Qd6+?
      • 1...Rd7
        • 2.Qxd7#
      • 1...Qxd6!
    • 1.Qb7?
      • threat
        • 2.Rd7#
        • 2.Re8#
      • 1...Qxh6+
        • 2.Sxh6#
      • 1...Qxf6+
        • 2.Sxf6#
      • 1...Qd6
        • 2.Re8#
      • 1...Qd2
        • 2.Bc7#
        • 2.Re8#
      • 1...Qc7
        • 2.Bxc7#
      • 1...Qa4
        • 2.Bc7#
      • 1...Qd4
        • 2.Bc7#
        • 2.Re8#
      • 1...Rxb7!
  • Keys
    • 1.Rc7!
      • threat
        • 2.Qe7#
      • 1...Qxh6+
        • 2.Sxh6#
      • 1...Qxc7+
        • 2.Se7#
      • 1...Qxf6+
        • 2.Sxf6#
      • 1...Rxc7+
        • 2.Se7#
      • 1...Kxc7
        • 2.Qb6#
      • 1...Qxb4
        • 2.Se7#
      • 1...Qd6
        • 2.Qxd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 1
  • Sets
    • Q(a);CHECK,XP(F)::R(J)+S(I),XQ(a)
    • Q(a);CHECK,XS(E)::R(J)+S(I),XQ(a)
    • R(c);CHECK,OGATE,XR(G)::QAB1(B),XR(c)
  • Tries
    • Try
      • R(G);N_SPINR(G),XR(c)
      • Threat
        • DUALS(3)
      • Vars
        • Q(a);CHECK,XP(F)::R(J)+S(I),XQ(a)
        • Q(a);CHECK,XS(E)::R(J)+S(I),XQ(a)
      • Refutation
        • R(d);CHECK,XR(G)
    • Try
      • R(G);
      • Threat
        • DUALS(3)
      • Vars
        • Q(a);CHECK,XP(F)::R(J)+S(I),XQ(a)
        • Q(a);CHECK,XS(E)::R(J)+S(I),XQ(a)
      • Refutation
        • R(c);CHECK,XR(G)
    • Try
      • R(G);CHECK
      • Refutation
        • R(c);CHECK,XR(G)
    • Try
      • Q(B);CHECK
      • Vars
        • R(c);N_GUARD,P_SPINR(c)::QAR1(B),XR(c)
      • Refutation
        • Q(a);XQ(B)
    • Try
      • Q(B);N_SPINR(G)
      • Threat
        • DUALS(2)
      • Vars
        • Q(a);CHECK,XP(F)::R(J)+S(I),XQ(a)
        • Q(a);CHECK,XS(E)::R(J)+S(I),XQ(a)
        • Q(a);::R1(G)
        • Q(a);OGATE,P_PINR(G)::B(A),XQ(a)
        • Q(a);OGATE::B(A)
      • Refutation
        • R(c);P_PINR(G),XQ(B)
  • Actual
    • R(G);
    • Threat
      • QAB1(B)
    • Vars
      • Q(a);CHECK,XP(F)::R(J)+S(I),XQ(a)
      • Q(a);CHECK,XR(G)::R(J)+S(I)
      • Q(a);CHECK,XS(E)::R(J)+S(I),XQ(a)
      • R(c);CHECK,SBLOCK,XR(G)::R(J)+S(I)
      • K(e);OGATEB,P_SPINQ(a),S_FLIGHT,XR(G)::QAB1(B)
      • Q(a);XQ(B)::R(J)+S(I)
      • Q(a);N_GUARD::QAR2(B),XQ(a)
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