MESON Chess Problem Database

Problem Display
PID: 225795 (B7/8/R1p5/nk2N3/R3p3/1N1PKn2/2P5/1Q6 w - - 0 1)

Sovik, Stefan

1st HM., Praca, 2000

B7/8/R1p5/nk2N3/R3p3/1N1PKn2/2P5/1Q6

#2

9 + 5

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Sc4+
      • 2.dxc4#
    • 1...Sb7
      • 2.c4#
  • Tries
    • 1.Sd4+?
      • 1...Kxa4
        • 2.Qb3#
      • 1...Kxa6
        • 2.Qb7#
      • 1...Kc5!
    • 1.Sxa5+?
      • 1...Kxa4
        • 2.Sac4#
        • 2.Saxc6#
        • 2.Sb7#
        • 2.Qb3#
      • 1...Kxa6
        • 2.Sac4#
        • 2.Saxc6#
        • 2.Sb7#
        • 2.Qb7#
      • 1...Kc5!
    • 1.Sxc6?
      • threat
        • 2.R4xa5#
      • 1...Sc4+
        • 2.dxc4#
      • 1...Kxa4
        • 2.Rxa5#
      • 1...Kxa6
        • 2.Sc5#
      • 1...Sxb3
        • 2.R4a5#
      • 1...Sxc6
        • 2.Bxc6#
        • 2.c4#
      • 1...Sb7
        • 2.Sa7#
        • 2.c4#
      • 1...exd3!
    • 1.Sd7?
      • threat
        • 2.R6xa5#
      • 1...Sc4+
        • 2.dxc4#
      • 1...Kxa6
        • 2.Rxa5#
      • 1...Sxb3
        • 2.Bxc6#
        • 2.R6a5#
        • 2.Qxb3#
        • 2.c4#
      • 1...Sb7
        • 2.Sa1#
        • 2.Sc1#
        • 2.Sd2#
        • 2.Sd4#
        • 2.Sbc5#
        • 2.c4#
      • 1...Kxa4!
    • 1.Bxc6+?
      • 1...Sxc6
        • 2.c4#
      • 1...Kxa6!
    • 1.Rb6+?
      • 1...Kxa4
        • 2.Qa2#
        • 2.Qa1#
      • 1...Kxb6!
    • 1.c3?
      • threat
        • 2.R4xa5#
      • 1...Sc4+
        • 2.dxc4#
      • 1...Kxa4
        • 2.Rxa5#
      • 1...Sxb3
        • 2.R4a5#
      • 1...Sb7
        • 2.c4#
      • 1...Kxa6!
  • Keys
    • 1.Sc4!
      • threat
        • 2.R6xa5#
      • 1...Sxc4+
        • 2.dxc4#
      • 1...Kxa4
        • 2.Sc5#
      • 1...Kxa6
        • 2.Rxa5#
      • 1...Sxb3
        • 2.R6a5#
      • 1...Sb7
        • 2.Sa3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • S(c);CHECK,OGATE::P(D),XS(c)
    • S(c);N_GUARD::P(B)
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • K(d);P_SPINS(c),S_FLIGHT,XR(F)::QAB1(A)
        • K(d);OGATE,P_SPINS(c),S_FLIGHT,XR(H)::QAB1(A)
      • Refutation
        • K(d);P-FLIGHT
    • Try
      • S(C);CHECK,XS(c)
      • Refutation
        • K(d);P-FLIGHT
    • Try
      • S(G);XP(e)
      • Threat
        • R1(F),XS(c)
      • Vars
        • S(c);CHECK,OGATE::P(D),XS(c)
        • K(d);P_SPINS(c),S_FLIGHT,XR(F)::R1(H),XS(c)
        • K(d);P_SPINS(c),S_FLIGHT,XR(H)::S(C)
        • S(c);P_SPINS(c),XS(C)::R1(F)
      • Refutation
        • P(b);XP(D)
    • Try
      • S(G);
      • Threat
        • R1(H),XS(c)
      • Vars
        • S(c);CHECK,OGATE::P(D),XS(c)
        • K(d);P_SPINS(c),S_FLIGHT,XR(H)::R1(F),XS(c)
      • Refutation
        • K(d);P_SPINS(c),S_FLIGHT,XR(F)
    • Try
      • B(I);CHECK,XP(e)
      • Vars
        • S(c);XB(I)::P(B)
      • Refutation
        • K(d);P_SPINS(c),S_FLIGHT,XR(H)
    • Try
      • R(H);CHECK
      • Refutation
        • K(d);P-FLIGHT,XR(H)
    • Try
      • P(B);
      • Threat
        • R1(F),XS(c)
      • Vars
        • S(c);CHECK,OGATE::P(D),XS(c)
        • K(d);P_SPINS(c),S_FLIGHT,XR(F)::R1(H),XS(c)
        • S(c);P_SPINS(c),XS(C)::R1(F)
        • S(c);N_GUARD::P(B)
      • Refutation
        • K(d);P_SPINS(c),S_FLIGHT,XR(H)
  • Actual
    • S(G);
    • Threat
      • R1(H),XS(c)
    • Vars
      • S(c);CHECK,OGATE,XS(G)::P(D),XS(c)
      • K(d);P_SPINS(c),S_FLIGHT,XR(F)::S(C)
      • K(d);P_SPINS(c),S_FLIGHT,XR(H)::R1(F),XS(c)
      • S(c);P_SPINS(c),XS(C)::R1(H)
      • S(c);::S(G)
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