MESON Chess Problem Database

Problem Display
PID: 157926 (1n4n1/2R3bB/7p/1N1NkP2/5r1r/7P/6QB/K7 w - - 0 1)

Andersson, Sven Tore

Problem (Zagreb), 1955

1n4n1/2R3bB/7p/1N1NkP2/5r1r/7P/6QB/K7

#2

9 + 7

15148 Sadier Collection 2016

SOLUTION

  • SOUND
  • Sets
    • 1...Rxh3
      • 2.Bxf4#
    • 1...Rh5
      • 2.Bxf4#
    • 1...Sf6
      • 2.Re7#
    • 1...Se7
      • 2.Rxe7#
  • Tries
    • 1.Rc1?
      • threat
        • 2.Re1#
      • 1...Rxh3
        • 2.Bxf4#
      • 1...Sf6!
    • 1.Rc2?
      • threat
        • 2.Re2#
      • 1...Rxh3
        • 2.Bxf4#
      • 1...Sf6!
    • 1.Rc3?
      • threat
        • 2.Re3#
      • 1...Rxh3
        • 2.Bxf4#
      • 1...Sf6!
    • 1.Rc5?
      • threat
        • 2.Qe2#
      • 1...Rxh3
        • 2.Bxf4#
      • 1...Sf6!
    • 1.Rd7?
      • threat
        • 2.Qe2#
      • 1...Rxh3
        • 2.Bxf4#
      • 1...Sf6
        • 2.Re7#
      • 1...Sxd7!
    • 1.f6?
      • threat
        • 2.Qe4#
      • 1...Sxf6
        • 2.Re7#
      • 1...Ke6!
  • Keys
    • 1.Sf6!
      • threat
        • 2.Qb2#
      • 1...Kxf6
        • 2.Qxg7#
      • 1...Rxh3
        • 2.Sg4#
      • 1...Bxf6
        • 2.Rc5#
      • 1...Sxf6
        • 2.Re7#
      • 1...Sc6
        • 2.Sd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • R(b);N_GUARD,XP(D)::B(C),XR(a)
    • R(b);N_GUARD::B(C),XR(a)
    • S(g);N_GUARD::R(H)
    • S(g);N_GUARD::R(H),XS(g)
  • Tries
    • Try
      • R(H);
      • Threat
        • R(H)
      • Vars
        • R(b);N_GUARD,XP(D)::B(C),XR(a)
      • Refutation
        • S(g);
    • Try
      • R(H);
      • Threat
        • R(H)
      • Vars
        • R(b);N_GUARD,XP(D)::B(C),XR(a)
      • Refutation
        • S(g);
    • Try
      • R(H);
      • Threat
        • R(H)
      • Vars
        • R(b);N_GUARD,XP(D)::B(C),XR(a)
      • Refutation
        • S(g);
    • Try
      • R(H);
      • Threat
        • QAR(B)
      • Vars
        • R(b);N_GUARD,XP(D)::B(C),XR(a)
      • Refutation
        • S(g);
    • Try
      • R(H);
      • Threat
        • QAR(B)
      • Vars
        • R(b);N_GUARD,XP(D)::B(C),XR(a)
        • S(g);N_GUARD::R(H)
      • Refutation
        • S(f);XR(H)
    • Try
      • P(G);
      • Threat
        • QAR1(B)
      • Vars
        • S(g);N_GUARD,XP(G)::R(H)
      • Refutation
        • K(c);N_SPINR(a),P-FLIGHT,P_PINP(G)
  • Actual
    • S(F);
    • Threat
      • QAB(B)
    • Vars
      • K(c);N_SPINR(a),OGATEB,S_FLIGHT,XS(F)::QAB1(B),XB(e)
      • R(b);N_GUARD,XP(D)::S(F)
      • B(e);SBLOCK,XS(F)::R(H)
      • S(g);N_GUARD,SBLOCK,XS(F)::R(H)
      • S(f);N_GUARD::S(F)
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