MESON Chess Problem Database

Problem Display
PID: 93737 (5r2/6B1/2B2R2/1Np1k2p/8/2P4K/1Qr1P3/n7 w - - 0 1)

Chocolous, Jiri

Ceske listy sachove, 1897

5r2/6B1/2B2R2/1Np1k2p/8/2P4K/1Qr1P3/n7

#2

8 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rxe2
      • 2.Qxe2#
    • 1...Rxc3+
      • 2.Qxc3#
  • Tries
    • 1.Sa3?
      • threat
        • 2.Sc4#
      • 1...Rxc3+
        • 2.Qxc3#
      • 1...c4
        • 2.Sxc4#
        • 2.Qb5#
      • 1...Rxf6!
    • 1.Sd6?
      • threat
        • 2.Sc4#
      • 1...Rxc3+
        • 2.Qxc3#
      • 1...c4
        • 2.Sxc4#
        • 2.Qb5#
      • 1...Rxf6!
    • 1.Qxc2?
      • threat
        • 2.Qe4#
        • 2.Qf5#
      • 1...Rxf6
        • 2.Qe4#
      • 1...Sxc2!
    • 1.Qb4?
      • threat
        • 2.Qxc5#
        • 2.Qe4#
        • 2.Qf4#
      • 1...Rxc3+
        • 2.Qxc3#
      • 1...Rxe2
        • 2.Qxc5#
        • 2.Qf4#
      • 1...Rxf6
        • 2.Qe4#
      • 1...Rd2
        • 2.Qe4#
        • 2.Qf4#
      • 1...Rd8
        • 2.Qe4#
        • 2.Qf4#
      • 1...Sb3
        • 2.Qe4#
        • 2.Qf4#
      • 1...c4
        • 2.Qc5#
        • 2.Qd6#
        • 2.Qe7#
      • 1...cxb4!
    • 1.c4+?
      • 1...Rc3+
        • 2.Qxc3#
      • 1...Rxb2!
  • Keys
    • 1.Sd4!
      • threat
        • 2.Sf3#
      • 1...Rxf6
        • 2.Qb8#
      • 1...cxd4
        • 2.Qb5#
        • 2.cxd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • R(b);OGATE,XP(B)::QAR(A),XR(b)
    • R(b);CHECK,OGATE,P_SPINR(b),XP(C)::QAB(A),XR(b)
  • Tries
    • Try
      • S(E);
      • Threat
        • S(E)
      • Vars
        • R(b);CHECK,OGATE,P_SPINR(b),XP(C)::QAB(A),XR(b)
      • Refutation
        • R(f);P_SPINR(f),XR(G)
    • Try
      • S(E);
      • Threat
        • S(E)
      • Vars
        • R(b);CHECK,OGATE,P_SPINR(b),XP(C)::QAB(A),XR(b)
      • Refutation
        • R(f);P_SPINR(f),XR(G)
    • Try
      • Q(A);XR(b)
      • Threat
        • DUALS(2)
      • Vars
        • R(f);P_SPINR(f),XR(G)::QAR1(A)
      • Refutation
        • S(a);XQ(A)
    • Try
      • Q(A);
      • Threat
        • DUALS(3)
      • Vars
        • R(b);CHECK,OGATE,XP(C)::QAB(A),XR(b)
        • R(f);P_SPINR(f),XR(G)::QAR1(A)
      • Refutation
        • P(c);XQ(A)
    • Try
      • P(C);CHECK
      • Vars
        • R(b);CHECK,N_GUARD,P_SPINR(b)::QAB(A),XR(b)
      • Refutation
        • R(b);XQ(A)
  • Actual
    • S(E);
    • Threat
      • S(E)
    • Vars
      • R(f);N_GUARD,P_SPINR(f),XR(G)::QAB(A)
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