MESON Chess Problem Database

Problem Display
PID: 77177 (4R3/QP4p1/p4r1q/RBPkPNn1/Np2rP2/1P1P4/2KP1n2/6B1 w - - 0 1)

Papack, Daniel

1st Prize, Pat a Mat 04. TT, 2006

4R3/QP4p1/p4r1q/RBPkPNn1/Np2rP2/1P1P4/2KP1n2/6B1

#2

15 + 9

23 Die Schwalbe 2007
15323 FIDE Album (2004-2006) 2013

SOLUTION

  • SOUND
  • Sets
    • 1...Rc4+
      • 2.bxc4#
    • 1...Rd4
      • 2.Se3#
    • 1...Rxe5
      • 2.Rxe5#
  • Tries
    • 1.Sb6+?
      • 1...Kxc5
        • 2.Ba4#
        • 2.Bd7#
      • 1...Rxb6!
    • 1.Se3+?
      • 1...Kd4
        • 2.c6#
      • 1...Rxe3!
    • 1.Se7+?
      • 1...Kd4
        • 2.c6#
      • 1...Ke6!
    • 1.Bc4+?
      • 1...Kc6
        • 2.b8S#
      • 1...Rxc4+!
    • 1.Bd7?
      • threat
        • 2.c6#
      • 1...Rc4+
        • 2.bxc4#
      • 1...Sxd3
        • 2.Se7#
      • 1...Rb6
        • 2.cxb6#
      • 1...Se6
        • 2.Sb6#
      • 1...Rc6!
  • Keys
    • 1.c6!
      • threat
        • 2.Qc5#
      • 1...Rc4+
        • 2.bxc4#
      • 1...Rxc6+
        • 2.Bc4#
      • 1...Sxd3
        • 2.Sb6#
      • 1...Se6
        • 2.Se7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • R(c);CHECK,OGATE::P(D),XR(c)
    • R(c);N_GUARD,SBLOCK::S(L)
    • R(c);OGATE,XP(K)::R1(O),XR(c)
  • Tries
    • Try
      • S(F);CHECK
      • Refutation
        • R(g);XS(F)
    • Try
      • S(L);CHECK
      • Vars
        • K(d);P-FLIGHT,S_CUTR(c)::QAB(M)+P(J)
      • Refutation
        • R(c);XS(L)
    • Try
      • S(L);CHECK
      • Vars
        • K(d);N_GUARD,P-FLIGHT,P_SPINS(a)::QAB(M)+P(J)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • B(I);CHECK
      • Vars
        • K(d);N_GUARD,S_CUTR(c),S_FLIGHT::P=S
      • Refutation
        • R(c);CHECK,XB(I)
    • Try
      • B(I);
      • Threat
        • R(H)+P(J)
      • Vars
        • R(c);CHECK,OGATE::P(D),XR(c)
        • S(a);XP(E)::S(L)
        • R(g);OGATE::R(H)+P(J),XR(g)
        • S(e);S_CUTR(g)::S(F)
      • Refutation
        • R(g);P_PINP(J)
  • Actual
    • P(J);
    • Threat
      • QAR1(M)
    • Vars
      • R(c);CHECK,OGATE::P(D),XR(c)
      • R(g);CHECK,SBLOCK,XP(J)::R(H)+B(I),DCHECK
      • S(a);XP(E)::S(F)
      • S(e);SBLOCK::S(L)
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