MESON Chess Problem Database

Problem Display
PID: 224588 (2Q5/r3p1r1/2Pkp3/3n1pN1/1P1R1P2/pB6/K2B1p2/3R4 w - - 0 1)

Rasmussen, Viktor E

Suomen Shakki, 1953

2Q5/r3p1r1/2Pkp3/3n1pN1/1P1R1P2/pB6/K2B1p2/3R4

#2

10 + 9

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Ra4
      • 2.Qd7#
    • 1...Ra5
      • 2.Qd7#
    • 1...Ra6
      • 2.Qd7#
    • 1...Rc7
      • 2.Qxe6#
    • 1...Rd7
      • 2.Qxd7#
    • 1...Ra8
      • 2.Qd7#
    • 1...Rg6
      • 2.Sf7#
    • 1...Rf7
      • 2.Sxf7#
    • 1...Rg8
      • 2.Sf7#
    • 1...e5
      • 2.Rxd5#
  • Tries
    • 1.Sxe6?
      • threat
        • 2.Rxd5#
      • 1...Rd7
        • 2.Qxd7#
      • 1...Ra5
        • 2.Qd7#
      • 1...Rc7!
    • 1.Qd8+?
      • 1...Rd7
        • 2.Qxd7#
      • 1...Kxc6!
  • Keys
    • 1.Re4!
      • threat
        • 2.Rxe6#
      • 1...Sc3+
        • 2.Bxc3#
      • 1...Sxb4+
        • 2.Bxb4#
      • 1...Sxf4
        • 2.Bxf4#
      • 1...fxe4
        • 2.Sxe4#
      • 1...Sc7
        • 2.Qd7#
      • 1...Rg6
        • 2.Sf7#
      • 1...e5
        • 2.fxe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 5
    • REMOVED MATES = 8
  • Sets
    • R(g);N_GUARD::QAR1(J)
    • R(g);SBLOCK::QAR1(J),XP(f)
    • R(g);N_GUARD::QAR1(J),XR(g)
    • R(i);N_GUARD::S(H)
    • R(i);N_GUARD::S(H),XR(i)
    • P(f);N_GUARD::R1(F),XS(c)
  • Tries
    • Try
      • S(H);XP(f)
      • Threat
        • R1(F),XS(c)
      • Vars
        • R(g);N_GUARD::QAR1(J),XR(g)
        • R(g);N_GUARD::QAR1(J)
      • Refutation
        • R(g);
    • Try
      • Q(J);CHECK
      • Vars
        • R(g);N_GUARD,P_SPINR(g)::QAR1(J),XR(g)
      • Refutation
        • K(e);N_SPINS(c),P-FLIGHT,XP(I)
  • Actual
    • R(F);N_PINS(c)
    • Threat
      • R1(F),XP(f)
    • Vars
      • S(c);CHECK,OGATEB::R(A)+B(C),XS(c)
      • S(c);CHECK,OGATE,XP(E)::R(A)+B(C),DCHECK,XS(c)
      • S(c);OGATE,XP(G)::R(A)+B(C),DCHECK,XS(c)
      • P(d);XR(F)::S(H),XP(d)
      • S(c);S_CUTR(g)::QAR1(J)
      • R(i);N_GUARD::S(H)
      • P(f);OGATE::P(G),XP(f)
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