MESON Chess Problem Database

Problem Display
PID: 189878 (8/p1pK1pr1/2N1pB2/q5P1/pRP1kPR1/4r3/2P1NPP1/1Bb4Q w - - 0 1)

Onitiu, Valerian

Magyar Sakkujsag, 1912

8/p1pK1pr1/2N1pB2/q5P1/pRP1kPR1/4r3/2P1NPP1/1Bb4Q

#2

14 + 10

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Ra3
      • 2.c3#
    • 1...Rb3
      • 2.cxb3#
    • 1...Rg3
      • 2.Sxg3#
  • Tries
    • 1.f3+?
      • 1...Kf5
        • 2.Se7#
      • 1...Rxf3!
    • 1.g3+?
      • 1...Rf3
        • 2.c3#
      • 1...Kf5!
  • Keys
    • 1.Se7!
      • threat
        • 2.f5#
      • 1...Qb5+
        • 2.cxb5#
      • 1...Qd5+
        • 2.cxd5#
      • 1...Rd3+
        • 2.cxd3#
      • 1...Qxg5
        • 2.c5#
        • 2.fxg5#
      • 1...Rxe2
        • 2.g3#
      • 1...Rxg5
        • 2.fxg5#
      • 1...Qe5
        • 2.fxe5#
      • 1...Qf5
        • 2.c5#
      • 1...Ra3
        • 2.c3#
      • 1...Rb3
        • 2.cxb3#
      • 1...Rc3
        • 2.Sxc3#
      • 1...Rf3
        • 2.gxf3#
      • 1...Rg3
        • 2.Sxg3#
      • 1...Rh3
        • 2.gxh3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 10
    • REMOVED MATES = 0
  • Sets
    • R(b);N_GUARD::B(A)+P(C)
    • R(b);OGATE::B(A)+P(C),XR(b)
    • R(b);N_GUARD::S(D),XR(b)
  • Tries
    • Try
      • P(E);CHECK
      • Vars
        • K(d);S_FLIGHT::S(L)
      • Refutation
        • R(b);XP(E)
    • Try
      • P(F);CHECK
      • Vars
        • R(b);P_SPINR(b)::B(A)+P(C)
      • Refutation
        • K(d);S_FLIGHT
  • Actual
    • S(L);
    • Threat
      • R(J)+P(I)
    • Vars
      • Q(e);CHECK,OGATE::R(G)+P(H),XQ(e)
      • R(b);CHECK,OGATE::P(C),XR(b)
      • R(b);N_GUARD,XS(D)::QAB(B)+P(F)
      • R(j);OGATE,XP(K)::R(J)+P(I),XR(j)
      • Q(e);OGATE::R(J)+P(I),XQ(e)
      • Q(e);N_GUARD::R(G)+P(H)
      • R(b);N_GUARD::B(A)+P(C)
      • R(b);OGATE::B(A)+P(C),XR(b)
      • R(b);N_GUARD::S(D),XR(b)
      • R(b);OGATE::P(F),XR(b)
      • R(b);OGATE::QAB(B)+P(F),XR(b)
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Developed and maintained by Brian Stephenson.
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